SCIENTIFIC ABSTRACT VERESHCHAGIN, L.F. - VERESHCHAGIN, L.I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001859430003-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 1, 2001
• Sequence Number: 3
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

8L659
Growth of Metal Monocrystals Under High S/020/60/135/001,/011/030
Hydrostatic Pressure B006/BO56
The crystal structure was subjected to X-ray examination; the results
obtained by these examinations are intended to be published in a later
paper. There are 2 figures and 20 references: 12 Soviet, 2 German, 4 US,
and 2 British.
ASSOCIATION: Institut fiziki vysokikh davleniy Akaderii nauk SSSR
(Institute of Phzsics of High Pressures of the Acade
-of Sciences USSR)
SUBMITTED:
July 7, 1960
VY
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S /0 2 0/6 0/1- - 5/0,0 5/0 1910 4 z
B01 9/B067
AUT11ORS% Vcronov, F. F., Vere~j~chMjn, L F., orresponding Member
of the AS USSR, 7=u one harova-, ;'~ A.
TITLE: Effect of Hydrostatic Pressure on the Elastic Properties
of Cerium
PERIODICAL: Doklady Akademii nauk SSSR, 1960, Vol. 135, No. 5,
pp, 1104-1107
TEXT: In the Introduction, the authors describe the ceriu-n anomalies
at high pressures and low temperatures which have been known for a
considerable period of time. They mention A. I, Likhter, Yu. N. Ryabinin,
L. F. Vereshchagin (Ref- '), and Bridgman (Ref. 2). The authors studied
the elastic properties at high pressure, and their changes on a poly-
morph~ustransition of the structure by means of ultrasonic methods. The
propagation r-' iltraoonic waves with a frequency of 3.5 - 5.5 megacycles
was measured by ~.,f a pulse device shown in Fig. 1. Specimens con-
tained 98.5,'~ Ce, 1-W.' of rare earths, 0.002%, Fe, and 0.003~, Pb, Bi, Sn,
and Sb, their diameter was 20 mm, their lengths differed. With increasing
Card 1

Effect of Hydrostatic Pressure on the S/020/60/135/00ri/018/043
Elastic Properties of Cerium B019/BO67
2
pressure, phase transition -took place at 7650t50 kg/cm ,with decreasing
pressure, at 5950t5O kg/CM2. Formulas are given for calculating the
elasticity characteristics from the results of sound velocity measurements.
Figs. 2 and 3 grapbically show the dependence of the propagation velocity
v, of longitudinal waves, of the propagation velocity v tof transverse
waves, and the Debye temperature on hydrostatic pressure, as well as the
dependence of elastic properties on hydrostatic pressure. There are 3
figures.and 15 references; 7 Soviet, 1 German, and 6 US.
ASSOCIATION: Institut fiziki vysokikh davleniy Akademii nauk SSSR
(Institute of the Physics of High PressureE of the
Academy of Sciences USSR)
SUBMITTEM August 22, 1960
Legend to Fig. It 1) trigger block, 2) pulse generator, 3) amplifier,
4) oscilloscope, 5) obtuator, 6) screwed nut, 7) high-pretisure container,
8) electric supply lines, 9) piezoelement, 10) cerium spe,-,imens,
11) piezoreceiver.
Card 214d-

S/12o/61/000/003/025/041
Z194/Z155
AUTHORS: Bilevich, A.V., Vereshchagin, L.P.9 and
Kalashnikov? Ya.A*.
TITLEt A piezometer for determining the density of gases at
high presaurAs-And temperatures
PERIODICALj Pribory i tekbnika eksperimento, ig6l, No-3, PP-146-150
TEXTs This article describes equipment which can be used to
measure the compressibility of gases at pressures up to
3500 kg/cm2 at temperatures up to 400 OC with a total errornot
exceeding 0.1%. The novel features of the equipment are the
high-pressure piezometer and miniature needle valve.
A piezometer described by M. Benedict (Ref.lt J. Amer. Chem. Soc.,
1937, Vol-59, 2224) suffers from a number of practical
disadvantages from which the present equipment is free. The main
parts of the present author's piezometer are a thick-walled bulb
go mm long, 8 mm internal diameter and 16 mm external diameter.
It screws on to a head which carries a capillary tube with a high-
pressure needle valve. The needle valve, illustrated in Fig.2,
has a steel needle 1, a sealing nut 2 and a gland consisting of
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A piezometer for determining the S/12o/61/000/003/025/041
E19VE155
three metal virrXv, arre of copper 3. and two of steel 4. The steel
needle is ground to fit the inner diameter of the gland. The
shank at the head of the needle is threaded to fit the threaded
internal diameter of the sealing nut'. The outer surfaces of the
gland rings are a ground fit in the casing. Tests made with
nitrogen at a pressure of 4.2 tons/cm2 and at room temperature,
and at 3.5 tons/cm2 and temperature of 400 OCI gave satisfactory
results. Still higher values could-no doubt be obtained if other
grades of heat-resisting steel were used in the construction.
The volume of the piezometer in about 5 mt; it was carefully
calibrated with carbon tetrachloride. In carrying out tests the
piezometer is contained in a hollow copper block which is within
a 300 W heating furnace. For purposes of weighing, the piezometer
is suspended by a wire from the arm of an analytical balance which
is on a bench above the furnace. The piezometer can thus be
weighed without withdrawing it from the furnace. The arrangoments
that are made to fill the piezometer with clean gas and to
measure the pressure on a standard manometer call for no comment.
The following formula is used to calculate the change in volume
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A piezometer for determining the ... S/12o/61/000/003/025/041
F.194/F,155
of the piezometer due to thermal expansion:
vt a T0(1 + 3.25 K 10 5t * 2.85 x 10-8t2 _ 1.65 x 10-110)
An expression is also given for the change in volume due to
pressure but when this was checked experimentally by a procedure
which is described it was found to be in error. This can be seen
from the curve of Fig-5, where the volume change an a function of
pressure at temperatures of 21, go and 147 OC is plotted in
tons/cm2 as curve a. Curve b corresponds to-the formula used,
which is evidently inaccurate. The test procedure is as follows.
The piezometer is heated to the test temperature, then filled with
compressed gas and allowed to stand connected to the gas supply
with the valve open for 20-30 minutes to equalise the pressure and
temperature. The piezometer is then disconnected from the high-
pressure gas supply with the needle valve closed and is weighed.
The gas is then released and it in weighed again. The volume and
weight of gas being accurately known under the given conditions of
temperature and pressure, the density and other characteristics
can be calculated.
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A piezometer for determining the .... S/120/61/000/003/025/041
E194/9155
B.K. 14uratovakiy is thanked for his assistance. There are
5 figures and 7 references: 3 Soviet and the following 4 English
Language referencesi
Roif.lj as in text above.
12A
'fAl A.Z.H. Love, Math. Theory of Elea., 1927, London.
R
~tef-51 P.W. Bridgman, J. Amur. Chem. Soc., 1937, Vol.59, 2233.
Ref.63 P.W. Bridgman, Proc. Amer. Acad. Arts and Sci., 1935,
Vol-70, 1.
ASSOCIATION: Institut fiziki vysokikh davleniy, AN SSSR
(Institute of High-Pressure Physics, AS USSR)
SUBMITTED: July 12, 196o
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S/120/61/000/002/041/042
E113/EI35
AUTHORSt Stepanov, V.A., and Vereshchagin, L.F,
TITLEi High temperature resistance heater with graphite spiral
heating element for high pressure vessels
PERIODICALi Pribory i tokhnika eksperimenta, 19619~No.2, pp.194-195
TEM The design of the heater for heating the inside of
vessels containing high pressure gas is shown in Fig.l. The
heating element is a spiral (3), turned from a graphitd rod
together with robust end pieces. To increase the electrical
contact area threads are cut in the end pieces on which the
stainless stool contacts I and 10 are screwed. The heating element
in surrounded by graphite tube (4) which in electrically insulated
from the spiral by a pyrophyllite bush (6), put on the cylindrical
neck of the intruding end piece. on each end the bush is fixed to
the heating element by three porcelain pins (7), so that there is
no relative movement between the spiral and the end pieces. The
pins are in the relatively large uncut parts of the and pieces..
The end pieces have small ohmic resistanceand are placed
sufficiently far away from the spiral no at the pins cannot
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S/12o/61/000/002/041/042
High temperature resistance heater.. E113/EI35
overheat. Around the graphite tube (4), five coiled molybdenum
sheet shields, each 0.2 mm thick, are fitted concentrically. The
shields are spaced with gaps of 0.1 mm between them, which are
maintained by means of two rows of pointed projections along the
edges of the shields. The shields are hold together by toothed
rings,, theme create a gap of 2 mm between the inner wall of cover
and the outer shield allowing only point contact at the teeth for
heat conduction. Into this gap fireproof material in powder form
is poured for additional heat insulation (for instance MgO).
This gap and the annuli between the shields are closed with
pyrophyllite washers (2) and (9). The length of the assembled
heater in 120 mm, diameter 30 mm, corresponding to the diameter of
the operating pipe of the high pressure vessel. The heater can be
easily withdrawn and placed into the high pressure vessel by means
of a rod screwed on the threaded part of contact Cl)(Fig.1),,
Contact (10) sits on the Iffinger" of the lead which in placed in
the middle of the cover closing the high pressure veAsel. The
other end of the spiral is connected to the wall of the pipe by
means of contact (1) and in this way the electrical circuit is
closed through the body of the vessel. The maximum working
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s/120/61/000/002/04i/o42
High temperature resistance heater..EI13/EI35
temperature of the heater depends on the material used. Graphite
has been chosen as it has the best properties for this application.
A heater of given dimensions gave a temperature rise up to 2200 *C
at 15 katm. pressure,'with a power consumption of 2.6 kW to 3 kW.
The effectiveness of the *present method of heat inzulation has .
been tested experimentally (in Ar, NZ and C02 atmospheres), and it
was found that at 2200 OC inside the heater and at 15 katm. after
One hour of continuous operation, at a point in the wall of th.e
high pressure vessel 15 mm from its inner wall, the temperature was
170 OC. The heater withstood satisfactorily severnl cycles of
applying and relieving the pressure. Acknowledgements are
expremsed to I.Ye. Surkov and V.A. Frolov who assisted in the
construction of the heater. (This is an abridged translation).
There are 2 figures and 4 references: 3 Soviet and 1 Engli8h.
ASSOCIATION: Institut fiziki bysokikh davleniy AN SSSR
(Institute of High Pressure Physics, AS USSR)
SUBMITTED: January 29, 1960
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20209
1044
Zoo ;r
J-S/12ti/61/011/002/005/025
24 21 _~ t) I t) '' E021/E435
i 14
AUTHORS: Panova, G.Kh, Sekoyan, S,S, andjjLjAWjp&jn LF.
TITLE, Phase Diagram of Bismuth at Pr-emsuren and Temperatures
up to 100000 lig/cm2 and 5OOcC
PERIODICAL! Fizika metn1lov i me ta I love den3-ye, 1961, Vol,11, No.2,
pp.215-219
TEXT: The p-T phase diagram for bismuth had been investigated up
to 100000 kg/cm2 and 5000C in order to compare the results with
other authors, The pressure equipment will be described in a
later paper. A bismuth wire,0,5 miti diameter, waa placed in a
container, The medium for transmitting the prenaure was silver
chloride which gives a quasi-hydrostatic pressure up to high
pressures, The sample was heated by an olectric current. The
pressure in the container was determined from the force developed
by the press, The apparatus was calibrated from the known
poly-morphic transf ormat ions of bismuth (24800 and 27000 kg/cm2)
thallium (43400 1~g/cjn2) and barium (77400 kg/cnI2). The temperature
was determined by the integral electrical power received by the
'wire after establishing that, with constant geometry of the sample
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20209
s/i26/61/011/002/005/025
phase Diagram of E021/E435
and constant thermal conductivitY Of the surrounding medium, the
temperature of the middle of the sample was linearly proportional
to the power and practically did not change with change in specific
heat condt:ctivity of the investAgated -jample or with pressure.
This was done using different metals at various pressures. This
method gave a temperature measurement with an accuracy of
� 5 - 10*C and eliminated the disadvantage of using electrical
leads required for other methoda of measurement, In the
investigations of the phame dickgrams of bi2smuth, polymorphic
transformations were detected by means of the rapid changes in the
electrical resistance of the sample, The relation between the
resistance R (ohtiis) and the power W (watts) received by the
sample was established and Fig.4 shows some of the results
(MCMUC-CMb - liquid, curves I to 12 relate to pressures of
28ooo to ioo4OO kg/cm2), Froi;i the results a phase diagram was
constructed and is given in Fig.5 (dotted line - data of Bundy;
top left of diagram - "liquid" ), The avernge accuracy of the
results was estimated as 2` for both temperattire and pressure.
The results are in good agreement with those of F.P.Bundy (Ref.6).
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'. i-_-Y
Phaso Diagram of ...
s/iz6/61/011/002/005/025
E621/9435
There are 5 figures, 1 table and 9 references: 4 Soviet and
5 non-Soviet.
ASSCCIATION: Institut fizilci vysokikh davleniy
(Institute of Physics of High Pressures)
SUB14ITTED: May 20, 196o
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113 9 S/126/61/oil/003/010/017
E032/E514
AUTHORSs Voronov, F.F. and Vereshchagin, L.P.
TITLEt Effect of Hydrostatic Pressure on the Elastic Properties
of Metals. 1. Experimental Data
PERIODICALt Fizika inetallov i metallovedeniye, 1961, Vol.11, No..3,
ppe 443-450.
TEXTt The effect of hydrostatic pressure on the elastic
properties of polycrystalline specimens of pure metals has been
investigated. The mechanical properties were investigated using
a pulse ultrasonic method (10 Mc/s). The ultrasonic apparatus
employed was described earlier by the authors and V. I. MuravIyev
(Ref.6). The following materials were-investigatedt Al, 99.996%
pure (Fe 0.0015%, Si 0-0015%, Cu 0-001%)', Mg. -)9.92'1.'2 rure
(Fe 0.04%, Si 0.01piol, CU 0.01%, Al 0.02%)-, armco-iron (Fe .09.8%,
C 0.012%, Si 0.02%, Mn 0.02%, P-0-03%, S 0.03%); Be. 99.2% pure
(Fe 0.36%, Mg 0.2%, Al 0.05%, Si 0.05%, Mn 0.02% -Ni 0.015%;
molybdenum, 99.88% pure (W 0.1%, Fe 0.005%, Al 0.002%, Cu, Zn, P,
S, Mn, As 0.001%). The densities of these materials viere found
to be: Al - 2.695, magnesium 1.731, armco-iron - 7.336,
beryllium-1.843, molybdenum 9.838 g/cm3.' Quartz plates were
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21222
Effect of Hydrostatic Pressure ... S/126/61/011/()03/010/017
E032/E5i4
attached to the ends of the specimens and their-working frequency
was 10 Mc/s. The elastic moduli were computed from the following
data- length of specimen under pressure (& ), density (P ), time
of transit of longitudinal and transverse altrasonic wav?s at
atmospheric pressure and the change in these times on application
of pressure, Atj and jatt. Changes in length and density on
application of pressure were corrected,for using the results of
Bridgman and others. The adiabatic bulk modulus was calculated
from the formula
1G.O*~411p,(j-'- 1;7)
0 110 3 .0
and the correspondin!i isothermal bulk modulus from
Kr.Q (2)
where a in the volume expansion coefficient, assumEA to have the
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,ffect*of Hydrostatic Pressure... S/126/61/011/003/019/017
E032/r,514
following values for Al Mg, Fe, Be ar.d Mo, re pectively:
-5 -5 -5 -1
7.09 x 10 7.66 x lo 3.52 x 10 3.65 x lo-5, 1.54 x 10 deg
The specific heat C at constant pressure f6r these materials was
assumed to be 0.214,P.O.235, o.18o, 0-475, 0.060 cal/g-deg,
respectively. The temperature was T = 303*K, the mechanical
equivalent2of heat was assumed to be *4.182 x lo7 erg/cal and at
2000 kg/cm the adiabatic bulk modulus was calculated (on the
first approximation) from the formula
2 4
S;.2 .412 p, I + I �p- A/,)
0 (3)
3 Kr,o) 3
The adiabatic bulk modulus KI was then converted to the iso-
S,2
thermal bulk modulus K in accordance with Eq.(2). Changes in
T,2
C and a were neglected. Next, in order to introduce the
c6rrection, the2average value of the bulk modulus in the range
0 to 2000 kg/cm was used and the second approximation KII was
computed. The new average value of the isothermal modulus was
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22 2 2
Effect of Hydrostatic Pressure, S/126/61/011/003/010/017
E032/E5i4
then used in the correction term for the next approximation. This
procedure can be continued indefinitely to obtain the values of
K' . Young's modulus, the shear modulus and the velocity of
propagation of ultrasonic waves were computed from the formulae
,vt ~%Lvb I
VI
PAC (A
A-I
1.1- 1 + (6)
0 - 4110pa
3 Rr.2) 3 Wr, 4
1 AP
21, 1 At I - 3
(16+ AQ (7)
.3 j?rt)
I-A -2
2 A-I
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Effect of Hydrostatic Pressure*.. S/126/61/011/003/010/017
E032/E5i4
The Debye temperature was calculated from
N
Os "-L/9 A +AQ'+ 2 (11.o + M,)'
N' M
and tho average velocity of sound fr9m
+ 2
V 3 V 3
In the above expressions N a in the Avogadro number. All- the
results were obtained at 30*C. The numerical data are
summarized in Figs. 1-5, in2which the pressure is plotted along
the horizonal axes in kg/cm . . There are 5 figures, 2 tables
and 16 references: 3-Soviet and 13 non-Soviet.
ASSOCIATIONi Institut fiziki vy5okikh davleniy AN SSSR (Institute
of Physics of High Pressures AS USSR)
SUBMITTED: July 22, 196o
Card 5110

89609
S102016111361DO210121034
B019/BO56
AUTHORS: -Corresponding Member of the AS USSR,
Semerchan, A. A., Kuzin, N. N., and Popova, S. V.
TITLE: Changes in Resistivity of Some 119tals at Presaures of up
to 200 000 kg/cm 2
PERIODICAL; Doklady Akademii nauk SSSR, 1961, Vol. 136, Na. 2, pp. 320-321
TEXT: The authors studied the resistivity of antimony, arsenic, and
2
calcium at pressures of up to 200 000 k9/cm . Likewise, bismuth, whose
resistivity has hitherto been known up to 140 000 kg1cm 2, 'Aas investigated.
The bismuth and calcium specimens were made from wire, the antimony and
arsenic specimens were thin Aingle cry3tals. All specimens were chemically
pure. As may be seen from changes in resistivity of the specimens graphi-
cally represented in Figs. 1, 2, and 3, arsenic and calciun have a mono-
tonic change of resistivity with rising pressure, bismuth and antimony,
however, have not. At 130 000 kg/cm 2, antimony shows a jump-like change
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896o9
Changea in Resistivity of Some Metals S10201611136/00210121034
at Pressures of up to 200 000 kg/cm 2 B019/BO56
in resistivity, bismuth at 125 000 kg/cm 2. The authors point out the
possible use of the jump-like change in resistivity of antiriony at
130 000 kg1cm 2for the calibration of high-preanure doviceB- A parallel
connection of antimony and bismuth (Fig. IB ) would be part'..cularly
suited. There are 4 figures and 2 reforencest 2 US.
ASSOCIATIOUi Institut fiziki vysokykh davleniy Akademii nailk SSSR
(Institute of the Physics of High Pressures of the Academy
of Sciences USSR)
"r- October 10, 1060
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Vf Lask~4 IN
23807
S/02 61/138/001,/011/023
Y-1 0& B104 Y-3201
AUTHCRS; F., Corresponding Member of the AS USSR,
Semer~_nan
Kuzin, N. N., and Popova, S. V.
TITLE! Change of resistivity of Dome metals at presaurcs up to
0* 2
250,000 kg/cm
PERIODICAL: Doklady Akademii nauk SSSR, v. 158, no. !, 1961, 84-85
TEXT: This is in continuation of an earlier paper by Vereshchagin. et al
(DAN, 136, no. 2, (1961)). The authors wanted to find nei polymorphous
transformations at high preasures in metals being accompanied by an abrupt
change of resi3tivity. Bridgman (Procc.. Am. Acad. Arts and Sci., 61, 165
(1952)) and Buridy (Phys. Rev., 110, no.. 2, (1958)) have been able to
identify a considerable number of polymorphous transformatioi,s of various
metals and alloys at high pressures. The possibility is pointed out of
calibrating high-pressure apparatus with the aid of an abrup; change of
the resistivity of different alloys at given pressures. The authors ueed
a high-pressure chamber calibrated with the aid of the known resistivity
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23807
S'/020/61/138/OCI/011/023
Change of resistivity of some metals.... B104/B201
jumps to determine the resistivity of the following metals: Bi I- II
(25,600 kg/om 2); Bi. 11-111 (27,000 kg/cm2); TI (45,000 kg/cm2 );
Ba (80,000 kg/cm2 ); Bi VI -VII (125,000 kg/cm 2). Pressure al)ove
125,000 kg/cM2 was determined by extrapolation (Fig, 1). Tho specimens
were wires 0.6 -.0.8 mm in diam,?ter, the n.?d','um fraromitting -;he preS S urP
was silver chloride. Measurements were coi-Aucted at roc'm teiaPerature.
Measurempnt results are graphically presented in Fig. 2. R ~ the
30 z s2
resistivity of the metal concerned at a pressure of 30,000 kg/CM . V~
Bridgman discovered on zirconium at a pressure above .80,000 kg1cm 2 a sharp
drop of the resistivity. The authors have not been able to ascertain this
2
drop up to 250,000 kg/cm . The difference in results is explained by a
possible difference in the purity degree of the metals. The authors used
zirconium iodide with 99-7 .0o purity. The following comparative data are
offered: Bridgman obtained for Pb; Rjoo~R30 - 0.694, for Sn:
RIOO/R 30 - 0' 707, for Cd: R 100 /R 30 ~ 0-795. Under the samf- conditions
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23807
S/020/61/135/001/011/023
Change of resistivi.ty of some metals ... 3104/B201
and in the same succession the authors obtained: 0.683, 0.715, and O.E)OP,.*
The difference iq not in excese of 2 5. There are 2 firareo and
3 references: I Sovie'l-bloc and 2 non-Sovict-bloc'.
ASSOCIATION: Institut fiziki vyookikh dnvl-priy
of Physicc of. llijli 7;-i
S' j3 7,: 1 T TDJanuqr-T
c, 21 loa~3-1',-n~:
IJO -
6 in 0o,
5j,", -j7J*

2.5309 S/020/61/138/)05/009/025
BIWB20
AUTkORS: Vereshchagin. L. F,, Corresponding Member AS USSR,
Semerchan, A. A., and Popova, S. V,
TITLE: Study of the ele,~trical resistance of cerium, ;lanthantim. and
neodymium at pressures of' up to 21501,0U0 VElcm
PERIOD1CAL: Akadeimiya nauk SSSR, Doklady, v 1,38, no. L, 196% ~059-,,06,,
J
TEXT: This is the continuation of previous papers by the authors (DAN,
136, no, 2, (1961); DAN, ~ I ~~. ric. 1 (196!)), in which the ~lf-rtrical re-
sistance of' metals at high pressurps (up to 2 '1)0,000 k6/~cm2) has been stud-
ied 9~stemuticully. P_ o. Bz,1_d-;nan (Proc. Ain, Acad Arts and Sci.., 81 1")
V,
(1952 ) proved that cunurn. iinthanum. ard neodymium havo, a -Aniw:im at
pressures raneing fr(~m 50,000 to '~00,000 kg/CM 2 C4-,r,-um -hows a ininimum at V
2 2. r -here Qb-
70,000 kg/cm and a maximum a, 90 000 kg/cm Sirnila re!ults
tained by Bridgman f~~r the (,th-L-r Iwo meta!3. The _-nvestivaticns described
here were conducted with a h,.,vh- pressure charber whIch hau, been calibrated
with the help of known sudden rhanges of the electrical, of cer-
Card 1/0

S/0 2016- /138 /,)05/009/'()2r
Study of the electrical resistance of BI04/B205
tain pre83UreS, The results are ~~raphically represented in FiEs. 2-4
The change of the electrical resistance R/R 30 (RZO Is the eLectrIcal re-
2
sistance at a pressure of 1,0.000 kg/cm ) shown in Fig. 2 indiiates that
cerium has a ;-' inimum at ')f),000 k~-/Cm2and a maximum at 80 ODO kj; I_m2 ~'he
maximum of thr., electrical r9nistance is taken as an indication of a Poly-
morphous conversion occurring at this pressure F I gr 5 .3hoNs analoFo!i:1
curves obtained for two apecimens of lanthanum of varying r)urit.,,,, La-l
0 - 70'/1' Pr, 004-r, Ft~) and La x -1 (0, Nd, U 2;~ .-P r, 0 , 0
(0 75 1, d, 27'o Fe)
I t may be Been that only tho last,-mentioned tyro of pure)
lanthanum has a weakly marked min-.rraim at a pressure of app-roximatkAy
2 2
95,000 kg/cm and z-:?akly -narked maxima at 110,000 and 140,C00 kg/CM . it
is assumed that a Lolymorphous conversion takes place also here at
/ 2
110,000 kg1cm Fig, 4 indicates that neodymium has indistinct minima and
maxima at 80,000 and 90,000 kg/cr,2, respectively This ma):imum is likewise
ascribed to a polymorphou3 conversion. The different valuEs of maxima and
., due to it grqut cali-
minima on the reeistance curv(.s tire explainod na beinv
bration error. All meaourementa were made with specimens in wire. form
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3/020/61/138/005/009/025
Study of the.electrical resistance of B104/B205
(1-1-5 mm diameter) at room temperature. Cerium impurities: less th~~n
Pr, 2-10- 2 -3~ -3% Pb, I
-10-3%1,4
0-75/~ lid, less than 0-75~1 Fe, 1.1b Cd, 1.10
I
and 1-10-3% Sn; neodymium impurities: less t.han 0.36~ Pr and La, and
2,10- 2% Ca. Following this series of articles, the authors wi.1l.present
a theoretical discussion of their results. There are 4 figures and 3
references: 2 Soviet-bloc and 1 non-Soviet bloc.
ASSOCIATION: Institut'fiziki vysokykh davleniy Alademii nauk SSSR
(Institute of Physics of High Pressures of the Academy op
Sciences USSR)
SUBMITTED: Ylarch 4, 1961
Card 3/6

2573-3
S/020/'61/139/003/0 12/025
B I C)41B201
AUTHORSs V a r eshcf,aKin, L. F,-, Corresponding 4'ember of the AS USSR,
3 ercnan, A. A., and Popova. S. V,
TITLE: Change of eli~ctrJ~(; resi~,tancp rf pra3eodymium, dysprosium,
erbium, and ytturbium tit pri~osure!3 of up to 250,000 kg/cM 2
PERIODICAL: AkademiiyEi nauk Sl,'J'--'R. Doklady. v~ 139, no. !, 1961t 585 - 586
TEM Thin is the fourth report on studies conducted on changes of electric
resistance of metals fl, higl' pres.911res At a].. DAN, 156, no.2,
(1961); DAN, 15_8, no. 1, DAN, 135, no. 5, (1961Y. The charge of
relative resistance R/R (R,,Ibeang resistance at a presaure of
2 25 - 7)
25,000 kg/cm ) of praseody::,iur, -,; ~raphicully chown in Fi,~. 1 Reference
is made to the minimum appearint~, ---t about. 110,000 kg1c'm2 , and it is stated
that this pressure darendence of re2i',-tance iE; the same 8.3 the one in
lanthLnum; prasoodymil;m and ian'hanumn ,7hibit the same cry2tal structure.
In both of them, a polyn;oi-,hou!i 7cransfejrmatli~.,n of the crystal Otructure is
believed to take place at -.his press,,-.re According to measurements by
Card 1/# 21

25713
S102016,11,"91002,10121029
Change of electric resistancoa of B1041B201
P. V. Bridgman (Proc An A n E~, d~.rts and Sci , 11952, 81, 165 (1952)) the
minimum for prageodymium 1.:3 V, k~~/cm2 This difference 1-i explained
by a different degree of purlty rf the m!iterial The relative resistance
of dysprosium as a function oll pr~jssure is shown in Fig, 2- There is a
minimum at 75,000 kg/cm 2; :h:a deLendence equals that of reodymium, Data
for erbium are e,-raphiczilly prez~er'-_,d in Fi:-, 3; for ytterbium, they are
4" 2
t~jven in Fi~;. 4. '1~;e pronourced maximum af 50.Q',,'O kglcr. is
explained by a polymorpi.-Jus t~;~tnsformation or by an electron transition,
Cerium exhibits th c. same _"er-~ndr-nce betwe~.n relative re.-~istarice E~rd
pressure; both metals have a cubi~'ally face-centered lattice. In the
following papers, the nuthora will examine the resistance of lantilanides as
a function of pre3sure- There are 4 figures, I taltle, anc 4 referenc~st
3 Soviet-bloc and I non-Soviet-bloz.
ASSOCIATior: Institut fiziki vysokikh davleniy Akademii nauk SSSR
(Institute of High-pr,!ssure Physics, Acadeny of Sciences
USSR)
Card 2/4

S/IBIJ62/004/006/'035/051
B106/B136
AUTHORS: Frolov, A. P., Vereshchagin, L. F., and Rodionov, K. P.
TITLE: Changes in the lattice paramete 1,r 9 of pentaerythrite under
pressures of up to 10,000 kg/CM
PERIODICAL: Fizika tverdogo, telat v- 49 no. 6, 1962, 16oa..1612
TEXT: A radiographic investigation of the lattice paramete:-s a and a of
pentaerythrite., C(CH2011)4 was made in a beryllium high-pres~jure chamber.
At room temperature with pressures up to 10,000 kg/cm 21 pentaerythrite has
a tetragonal crystal lattice with the parameters a -.6.10 9 and c - 8.73 L -'
At a preasure of 9,000 kg/cm , a - 5-99 R and cg~c'~46 1. A discontinuity
of a and c was observed between 4200 and 5600 k m . The volume also
changed suddenly by some 2.6~. These date are evidence of a phase
transition in which, however, the crystal structure below and above the
transition pressure remained the same. The behavior of pertaerythrite
under pressure can be described by two empirical third-order equations of
state;
Card 1/2

s/ii3l/62/001/006/035/051
Changes in the lattice ... B108/B138
Before transition: L V - 1,584*1 0-5p - 2.380.10-9P2 + 0-330-10-13P3
VO
after transition: AV - 2.404-1 0-5p - 3-840-10 -9P2+ 2.202-10-13d.
V0
Above the pressure of transition, compressibility increases with
increasing pressure. There are 5 figures and Itable.
ASSOCIATION: Institut fiziki inetallov AN SSSR, Sverdlovsk (Institute of
Physics of Metals AS USSR, Sverdlovsk). Institut fiziki
vysokikh davleniy AN SSSR, Moskva (Institute of High-
pressure Physics AS USSR, Moscow)
SUBMITTED. February 15, 1962
Card 2/2 1

S/18 62/004/007/0N/037
D1 78Y3104,
1.I'U'T ~-_. 0 Yevdokimova, V. V., and VvrashchaGin, L. F.
TITLE': Polymorphous transition in 'NaCl
PERIODICAL: Fizika tver(iogo tela, V- 4, no. 7, 1962, 19(*15-1966
T_:M: At Pressures close to 1.8-10 4 k6/cr, 2, Nacl acquires a structure
of he CsC1 type. Its ori,~inal lattice is stable, the convtant. equals
3.39-0.06 3 at atmospheric pressure. The density of the new phase .43
2.535 G/cm and the discontinuity in the specific volume (luring the
transformation is 14.2!~. AllowinE; for the fact that the d%stance between
the latotice constant of
.he oppo3itely chLr-ad ions increases by 3"
the new phase is found to be 3.35 ~. 'Nhen the presoure is releacedt the
new phase is usually maintained. 3hear deformation might -lay a
sic,nificant role in the phase transition. There are 1 figiire and 1 table.
t~
ASSOCIATION: Institut fiziki vysoKikh davlaniy AN SSSR 'I't)skva
(Institute of the ?hysica of ?ressuren AS U13SR, Moscow)
SUBMITTO: Yarch 19, 1962
Card 1/1

FROLOV, A.P.; VEPXZHGx'!AGIII, L.F.; RODIONIOV, K.P.; OLEYNIK, 11.1.
Methods of X-ray investigation of materials under higa pressures.
Part 2: Equipment for the preparation of X-ray picturos of
powders under pressure of up to 18,000 k$/=2. FIZ. net. i
motalaoved. 14 no.1:80-84 JI 162. 15;7)
1. Institut fiziki matallov All SSSR i Institut fizikL vyaokikh
davleniy All SSSR.
(mictal powders') (X ray3-Diffractio-1)

3/057/62/032/00:!/016/022
B124/B102
AUTHORSi Vereshchagin, L~ F.,, Zubova, Ye. V_ and Shapochkin. V, A
TITLEt Electric contact resistance at high normal presiiures
PERIODICALi Zhurnal tekhniche8koy fiziki, v, 32, no, 2, 196,!, 230 - 232
TEM The pressure dependence of the electric contact resistance of pis-
tons made of WX15 (ShKI05) steel and of a powder-metallurgical hard alloy
of the type 8 K6 (VK6) sas examined at pressures of up to 100,000 kg/CM2,
using the high-contact-pressure method developed at the authorsl institute.
The purity and the quality of the contact surfaces were kept constant ]in
all experiments. The diameter of the rated contact area of -,he pistons
was also constant and equal to 3 or 6 mm, The electric contact was calcu-,
lated from the change in contact resistance measured with a potentiometer
of type ffTrN-1 (PPTN-1 ) and a high-sensitivity galvanometer of type M 2114
(M21/4) with low internal resistance, Heating of the contac-; and the
relevant change in resistance were excluded by using 1- to 2--ma currents,
The voltage drop was measured for two current directions, and the average
value was determined. The contact resistance was calculated from
Card 1/1

3/057/62/032/002/016/022
Electric contact resistance B120102
R U
R n x .-jhere R is the standard resistance, U is the voltage drop on
x - -IF- , n n
n
'the atnndard sample, and Uxis the voltage drop on the sample examinea.
Pressure was gradually raised by 1,000 to 10,000 kg/cm up to 100,000 kghl~l
Voltage drop measurements were repeated 15 to 20 times, and eE&ch test 3 to
4 times, with the first test results being neglected, as a rule. The re-
sults shown in Fig, 2 are in good agreement with those of othcr authors,
There are 2 figures and 4 Soviet references,
ASSOCIATIONt Institut fiziki vysokikh davleniy AN SSSR, Moskva (Institute
of High-Pressure Physics, AS USSR, Moscow)
SUBMITTEDt February 6, 1961
Card 2/3

AUTHORS:
TAITLEj
34215
3/057/62/032/002/'017/021-,
B1241BI02
Vereshchagin, L, F., ShApochkin, V, A., nn~l Piroj!ova, L B,
Contact compressive ntrength of hard alloys of tfpe
PERIODICAL: ZhurnAl tekhnicheskoy fiziki, V. 32, no. 2 ~ 1962 , ',, 5 21
TEXT: The compressivc. strength and residual propertien- (strength and plaz-
ticity) of pi3tons made of the sintered carbides 3k'8F1VK8V),jN-6S(Vi(6V)
3K6(VK6), and FK43(VK4V) were tested using special device. The di.,Arr-,eto-- cf
the contact surface was 3-3.5 "'In- Pistons were tested by applyLng only 1pr-
pendicular pressure or perpendicular pressure and torque simultaneously, in
the former case, the load was raised first to 100,000 kg/cm2 then the
sample was unloaded and examined for cracks, and loaded aCair at interv-ils
of 100,000 kg/cm 2 until the first c5acks appeared, In the latter case ste?-
'wise loading by 10,000-20,000 k9/cm wa3 used, and, at a cerinin perpendl.-
cular pressure, torque was applied until the first cracks apleared, The M
sults indicate that the contact compressive strength of the f.lloys
lowerect by 2CP
with decreasing cobalt content. The breaking load is -.uho-n
Card 113

342-'15
3/057/62/032/002/017/022
Contact compressive strength B1241BI02
torque has been applied. The highest perpendicular load (350:000 ke"/cim 2
could be applied to VK4V Pistons, while VK84 pistons cracked under i pres-
2
sure of 220,000 kg/cM " Application of torque to VK4V gave mo!jt i)ronounced
effects; the breaking load of the BK6TrA.C(VK6TaS) alloy was abo-ut M;0001q~cm~
It was found by inicrohardneS3 tests with the device Trm'r-3 that (1)
microhardnees increases equally both with perpendicular pressur-? ard nitn
pressure -,lus torque; (2) cold hardening of the contact surfa~-e is constant
at all points of the surface except the borderl (3) residual hardering
reaches a maximum in VK4V (ibout 2VIv) and a minimum in VK8V (:,bont 11~',
Radial and annular cracks were formed in positions and d,-str1*)uti,-.r,!3 dn-~"cn
dent on the kind of load. Tangential stresses as a function :)f perperldlIZU
lar pressure were measured for VK8V, VK6V, and VK.',V bet,.,,een 1) 'GOO and
200,000 to 300,000 kg/cm2. The friction coefficients of all az
pressures up to 250,000 - 300,000 kg/CM2 were all about 0.185. -w"th a 1-5
to 2-fold decrease with increasing pre3sure. Mechanic L. h.. Vo'yeyk-~V An!
'aboratory assistant Z A. Levchenko are thanknd, Thert --ire 5
table, and 5 Soviet references,
Card 2/3

~4215
S/057/62/0 32/002/017/022
Contact compressive strength ... B124/B102
A330CIATIONt Institut fiziki vysokikh davleniy AN SSSR Moskva (Institute
of High-pressure Physics, AS USSR, Moscowi
SUBMITTED: February 5, 1961
Card 3/3

----VERFXHM&QjjL~L.F.; YUZEFOVICH, N.A.
Effeot of pressure on the state of isomeric molecules. Zhur.-
fiz.khim. 36 no.5t969-972 My 162. 09RA 15:3)
1. Institut fiziki vysokikh davleniy, AN SSSR.
(Alcohols) (Ultrasonic testing)

V056/62/043/004/ 014/061
B102/B180
i. ova, V. V. , Vereshchagin, L. F.
T I'' ?0l,/:,.orpiic transition in sodium chloride under :jrecuure
I tooreticheakoy fizi",L, v. 43,
-2, 1203 - 1,*1P
no. ."(1;
2
Of lip to 18,003 kFjerij .'Ire applied to powder samplet; of
a and the presnure-induced
s f r'l ta I e (; :I I t a-0 of Ne.Cl ninele crystal
io vrluro., !inl ,,tructure ware studied by X-rny annlyrAs. A ner
I I
pt;a,,te -iol c,--redl 0~ 17,7jz- VC/cm", i. c. the cubic faceoontervd lattice of
Formal N-1,1 ch-ani-es to a CaCl-type lattice with a mean lattice Constant
3
of 3.36+~*-)4- The density of the new phase is ?- 2.535 11,'m , Thai of
--I phaGe -
the initi, 2.165 c:/cm3, so that the voluine ch-inFe 6V - 14.2;~
pf"- Mol'-'. If it rl'Qno~0!3 the lattice constant of-the nevi and b that of the
. ;1 a ~0.63 b. Tho prescure, dependence of the chnnre in
initial 0.5ob ;~ t' thc.- no-i :.till re-iaint~(I.
-herc are 2 firurv3 antl t
A 0 1~ 1 A ,, 10 i ti t i k i -ty :; o ? i k I iv In i y A k a d c m i I n n u k '4'J A? I nI t i-
Wte of ;I-sic.,3 of Hicli Fres,,mres of tho Aca-1, my0f
c i e i c

S/020/62/143/00-4/010/027
B104/B102
AUTHORSt Kabalkinal S. S., and Veroshchagin, L. F., Co7responding
Member AS USSR
TITLEs kn X-ray diffraction study of the eff'ects of hydrostatic
pressure up to 18,060 k9/cm2 on the structure of lead titemte
PERIODICAL# Akademiya nauk 53SR. Doklady, v. 143, no. 4, 1962, 818 - 621
TEXTi The investigation was carried out at room temperatures by means of
a special high-pressure chamber (Fig. 2) with a fine-foous tube and copper
anode. The ceramic samples were delivered by the Fiziko-khimicheskiy
institut im. L. Ya. Karpova (Physicochemical Institute imeni L Ya Karpoj
and had the following lattice paramoterst a - 3.903 X, c - 4.;54 it
c/a - 1.064. With increasing pressure a decrease of Vne cell tetragonaliv
and a lowering of the Curie point are observed. At 16,000 k9/cm 2 c is
considerably smaller (de - _0.10 2) and a is slightly greater, (da
+0.01 R). The relative change of c is a linear function of pressure p;
4c/c - 14.3-10-7.p. The change of parameters with increasing pressure
Card V2

S102 62/143,/004/010/027
kn X-ray diffraction ... B104YB102
coincides qualitatively with their change as temperature functions. At
0
480 C do -0.129 R and 4a - 0.048 Re High preaeure and high temperature;
lower the polarization. The compressibility of the ferroolectric phase
of PbTiO is assumed to be a superposition of normal comp:-ession and de-
3
formation combined with a decrease of polarization under
There
pressure.
are 4 figures and 1 table.
SUBMITTEDs December 29, 1961
-pres3ure chamber.
Fig. 2. High
Legends (1) internal cylinder; (2) external
cylinder; (3) samplej (4) beryllium conel
(5) lead-inj to which a manganin manometer
is connects 1 (6) uquia, (7) diaphragmi
(6) piston.
Card 2/2

)?
:3) 2 5/'J i b";
5- 0
_F Correct)ondin-
S. S. Vereshcha,~in L.
-.eml,; er .3 U33'k , and Shulenin, B.
~1- X-ray zt-idy of the ef"fect of hydrostatic preasure on the
3tructure of barium titanate
?-`2 !DDICAL. nauk SSSII. Doklady, v. 144, nCIN. 5, 1962,
1019-1021
2EXT: 'fhe effect of hydrostatic pressure on the structure of barium
titanato -fiao atudierl at room ter?:*erature. X-ray pict-Irea nith reflection
/ 2
anrjeo of 60-800 were rocorlel under pressures of 1-6000 kg,CT3 , uoinU, a
(YROS) X-ray camera, and on auxiliary hich-pressure unit. The
barium, titanate specimens (lattice constants, a - 3.995 ~ and c 4.032
Curie temperature T ClIr =110C) had been 3upplied by the Fiziko-
1-chimichonkiy institut in. Ya. rarpova (Phygioochomical Infitituto iii,eni
','he value T at hirh pre.-surea were
..arpov). I s of a, c, and Cu.
det(.-..ined usinL; the line group vith h2+k2+12 - 26 (0 - 7-1-800)
Card- 1/3

S/020/62/14
12 5/B 104
,ray study of the effect of 3
The X-ray pattern of BaTiO 5 is shifted under high proasure but returns to'
its original .position vhen the specimGn is unloaded. (1/P) ",,//v
7 2/k,
lound to be 13.2-10 cm P . As t:;e -pressure is increased from 1 to
2 0
aseo from, 4.033 to 4.020 a from to 3.9~O
,/cm. , 0 -ecre
while a U- o
/a from 1.010 to 1.003) /a increases from 0 0. 15PI
L __c/c Iror. 0 to 0.25-/u. ','ost of these chanf) ej are linoar in fJ
ure dirainish-i3 the
-~,7.4,.-,ation. Decreaoe of the Curie temperat
v on 'he pres~3ure dependence i,3:' a, c, -nd
'ality" of t ne !at *,ice . L
n BaTiO ic qualitatively ir. accordance with the de,_),!ndence of ".-Ie
5
ru.. -:ctive quantitie3 of the solid solution (Ba-3r)TiO 5 on its content of
Sr-'i) 3* The comprensibility -.'.c/c of PbTiO 3 is almost fou:7 tinco that of
BaT-10... '71 j, 0 b(ico,,:,,eo comnrencible by t ~e
.L I ferroelectric :,*,',,
of deformation and normial compression, attended by a jecrea.,,,(, in
polarization. The otretchinC of the PbIAiO 3 lattice in the a-diruction is
of larCer amount than 'he normal compression,-and that of the BaTiO 3
Card 213

5tiltiY Of the Offect Of
3/020/62/144/005/OOAI/017
II 12 5/ 104
io :37-.allcr. lie hydrostatic preur,ire affects the structure of
iearl titan.,ite, ri-itich nore than that of barium titanate. There are
iwi~i 2 tables. The most important Englieh-langqpLge reference is.
1hys. Rev., 78, 52 (1950).
C IAT 1 ON :Dir:titu, fiziki vyookikh davleniy Akadema~i~auk SSSR
(Innti%ute of the Physics of High Pressures-:)f the Academy
of Sciences USS2)
"-7-- "1 '.7 :D February 23, 1)62
'lard 3/3

TERES.!&ELGjU,_L,?,j_YUZEKVICHj K,A.; CHELUS:i-M, A.V.
Wasurement of ultrasourd veloc'Ltiea in come highly compreeBed
gases. Dokl. Ali SSSR. U4 no*6:1272-1274 Je 16,2. (HIPA 15:6)
la Institut Miki vysokikh davleniy Akademii nau~ SSR.
2. Chlen-korrespondent Akademii nauk S.E'R (for VereshcEagin).
(Ultrasonic waves,--Speed) (Gases, Compres-ced)

'~~/02 0/6 2 /14 5/0 01 /000 1r'j 8
B1 04/BI 02
AVITOPS: 12Egs~hcaclnj~! Corresponding Member AS USSR,
J~. , -
_~~morchan, A. A., Zubkov, V. 11., and Kuzin, N. N.
TTTL'-': High-pressure and high-temporature apparatus with several
pairs of,electric lead-in wires
Akademiya nauk SSSR. Doklady, v. 145, no, 1, 1962, 71-72
Difficulties arising in the current feed to high-pre3sure apparatus
were overcome by the device shown in i'ig. 1. Spocimen 4 is placed in a
cylindrical'container inside a high-pressure chamber 5. Two pistons 9
compress the specimen. Luring compression the pyrophillite seals 2 enter
thtl gaps (_ 0.1 mm) between the four sectors of pistons 9. The currbnt is
fQd throuCh the piston to the cylindrical graphite or metal container
which is used as a furnace. The apparatus was calibrated for pre.seures of
UP to 50,000 k,-/cm 2 by making use of the jumps known to occur in the-
electric conductivity of Bi and Tl at certain temperatures. There are
3 figures.
C a rd 112

S/020/62/145/001/009/016
High-precsure and high-tewperature ... B104/BlO2
ASSOCIATION: Institut fiziki vysokikh davleniy AkRdemii naui SSSR
(Institute of the Physics of High Pressures of the Academy
of Sciences USSR)
SUB":I,L".Z!): ~Yarch 20, 1962
FiE,. I .High-pressure ap-paratus
Le,~er,d: (1) and (2) pyrophillite
E;aals; (3) rinc for pressure
transmission; (4) specimen;
(5) high-pressure chamber.
AIR
'X
)C ME,-
ft
Card 2/2

VFIMHCHAGIN L.F - SEIIMHANO A,A.,- POPOVA, S.V.; KUZIN, 3.N.
P
Variations in the electric resist ce of certain somiconductors
at pressures up to 300,000 kg./cmT
. . Dokl.AN SSSR 145 no.4:757-
760 Ag 162. OUM 25:7)
1. Institut fiziki rjsokikh davleaiy AN SSSR. 2. Chlen-korrespondent
AN SSSR (for Vereshchagin).
(Semiconductors-Electric properties)

SWROHAN, A.A.; XMIN, N.N.;
Temperature dependence of the electric resistance
of polycrystalline graphite at pressures up to 250,000
kg./cm4. Dokl. AN SSSR 246 no.4:803-804 0 162. (NIRA 15:11)
1. Institut fiziki vysokikh davleniy AN SSSR. 2. Chlen-
korrespondent AN USSR (for Vereshchagin).
(Graphite crystals-Electric properties)
(High-pressure research)

KUZINP N.N.; SFIMCHLN, A.A.; VERESHCHAGIN, L.F.; DRCZDCVA, L.N.
Temperature dependence of the electroconductivity of iodine
at pressures up to 200,000 Kg./cm2. Dokl. AN MR 11+7
no.1:78-79 N 162. (KIRk 15:11)
1. Institut fiziki vysokikh davloniy AN SSSR. 2. Chlen-
korrespondent, AN SSSR (for Vereshchagin).
(Iodine-Electric properties)
(High-pressure research)

'ACCESSION tilt: AP4009138 S/0056/63/045/006/2073)2076
AUTHORS: Kabalkina, S. S.; Vereshchagin, L. F.1 Shulenin, B. M.
TITLE: Phase transitions in tellurium at high pressuren
SOURCE: Zhurnal eksper. i teoret. fiziki, v. 45, no. 6, 1963, 2073-
2076
TOPIC TAGSt tellurium high pressure, phase transition, reversible
phase transition, tellurium crystal structure, x ray dilfraction
pattern, x ray diffraction, Patterson Harker section, chain struc-
ture, laminar structure
ABSTRACT: An x-ray diffraction study of tellurium was 1:arried out
at pressures up to 100 kbar in order to find how the crystal struc-
ture of tellurium changes at high pressure. Two reversible phase
transitions were observed, at 15--20 and 42-45 kbar. At 15 kbar
tellurium is shown to undergo a transition from the chain structure
Card 1/2

ACCESSION NR: AP4009130
AB to the laminar structure A7, and the reasons why this transition
was not detected by Bridgman (Proc. Am. Acad. Arts Sci. v. 60, 366,
1925) are explained. The structure of the second phase transition
at 42--45 kbar could not be ascertained, but the constancy of the
x-ray diffraction patterns above 45 kbar seems to cast doubts on
the 69 kbar phase transition detected by Bridgman (Proc. Am. Acad.
Arts Sci. v. 74, 425, 1942). Orig. art. has 2 figures and 2 tables.
ASSOCIATION: Institut fiziki vysokikh davleniy Akademii nauk SSSR
(High Pressure Physics Institute, Academy of Sciences SSSR)
SUBMITTED: llSep63 DATE ACQ: 02Feb64 ENCL: 00
SUB CODE: PH NO REF SOV: 002 OTHER: 005
Cord 2/2

(-i) (o) AT-k TC/
TITLE! Man s In the resistivity of PbTe, CdU"e, a,td BI Mil 2 Te- sa~ Pat
f up to ZQQ )00 kgj cr. su-o
presswes o
SOME: 0 SSSR. Dokla4y,, v. 150, roe SP 1 3, 10P-6-1028
P=PIC TA"1100: gem! cemlucll-rs. teih~--!,-;
r- f-H
Card 1/2

ACCESSION NP: AP~O%f?871
;ld ao not-A~-,d by other ot ierv s~ r s i H. ri.
~~n.a
ASSOCTATIQa: Institut fiziki vv snkikh ft-rlr,,Illy AktOen-A!
'f
-!)TI E
- - -- - ------------------

)PIC TA(,S: c i n t '1 1 r e me i t i n r c
r a n r .2 a 7
A 'S I ~K A t re i 5 U t C u E! t7 :I u u C,
I - n v n
r c
Card 1 3

I q .

5V0 r rOV" -r_at-LT-VJRL Rble &5S:3i5taflQU ift the
V 0 firu-res.---
70!- shch~glakov took part __ k --W-a-S
~Izcnr~ ITT
Cir-

PTEYEVA, N.S.; VERESHCHAGINq L,F.; KOIDTYGIN# V.S.
, 'k-
optical method for detendning the melting point of graphite
as dependent on pressure up to 40tOOO atm. Dokl. AIN 3SSR 152
no.2:317-319 S 163. (MIRA 16:11)
1-Institut fiziki vysakikh davleniy AN SWR i Moskovskiy
gosudarstvennyy universitet im. H.V. Lomonoaova. 2. Chlen-
korrespondent All SSSR (for Vereshchagin).

KABALKINA, S.S.; VMSHCHAGIN, L.F.; MYLOVk V.P.
Phase transitions in antimony under high pressure. Do~.l. AN SSSR
152 no.3s585-586 S 163. (YJRA 16:12)
1. Institut.fiziki vysokikh davleniy el SSSR. 2. Chler.-korrespon-
dent AN SSSR (for Vereshchagin).

KABALKIMA, S.S.; POPOVA, S.V.; SERFBRYARAYA# R.R.;.VERMHCHAGIN, L.F.
New modification of Ag 0 with a lazinar structure. Dokl.
AN SSSR 152 no.4tS53-;J~ 0 163. (MMA 16:11)
1. Institut fiziki vysokikh davloniy AN SSSR. 2. Chlen-
kgrrespondent AN SSSR (for Vereshchagin).

SEMERCHAN, A.A.; KUZIN, N.l- L.N.- VERESHCHAGIN, L.P.
f I . . -
Variations In the ;-le2tria resistance of Pt)S, PhSe, and' PbTe at
preBoures up to 200,000 kg./cm2. Dokl. AN SSSR 152 ro.51lD79-
1081 0 163. (MIRA 16:12)
1. Inatitut fiziki vy,,jokikh davlenly AN SSSR. 2. Chlen-korrespondent
AN SSSR (for Vereshchagin).

ARKHIPOV, R.G.; VERESHCHAGIN, L.F.
..... .,4
Plastic deformatione in a gravitating sphere. Dokl. V S&M
153 no.4t832-834 D 163. (KIRA 17:1)
1. Institut fiziki vysokikh davleniy AN SSSR. 2. Chle:i-
korrespondent AN SSM (for Vereshchagin).

ACCESSION ITAt AP4041747 S/0181/64/006j'007/2223/2225
AUTHORS: Vc-,reshchagin, L. F-i itskevich, Ye. 8.1 Atabayeva, E. Ya.t
Popova, S. V.
TITLE: On a new modification of Bi Se
2 3
SOURCE: Fizika tverdogo tela, v. 6, no. 7, 1964, 2223-2225
TOPIC TAGS: bismuth inorganic compound, polymorphism, metal struc-
ture,, x ray diffraction study
ABSTRACT: This is a continuation of an earlier,'study (FTT v. 6; 000,:
1964) of the electric resistivity of Bi Se as a function of the
2 3
pressure in the interval up to 140 kbar at room temperature. Along
with the previously observed reversible transition to the metallic
state observed near 100 kbar at room temperature, an irreversible
'polymorphic transition was observed at 800C and 120-65 kbar, to
1/3

,ACCESSION UR: AP4041747
a new phase Bi Se XI which is metastable under normal conditions.
2 3
'.To confirm the polymorpbic nature of the transition, tile sample was
;annealed for 2 hours in pure helium (500C), and the reverse transi-
tion Bi Se 11 -.0 Bi Se I was established by x-ray diffraction. The
2 3 2 3
'~x ray diffraction pattern has 40 lines which could be identified in
a structure of the bismuth type (Bi 2S3), orthorhombic cell, space
(D 16 ). The unit cell parameters of the hew phase'are
group Pbran
2h
ia = 11.63 + 0..03 X, b = 11.76 � 0.03 A, and c - 4.06 + 0.01 4. The I'-
!density determined by x-ray diffraction and pycnometrically is 7.8
respectively, confirming the correctness of the
and 8.0 + 0.3 g/cm3
.proposed structure. The resistivity of the new phase is 1.2--l.5
-ohm-cm, and the temperature coefficient of resistivity is negative
!between 0 and 100C. The data confirm the correlation between the
electric properties and the crystal structure inherent in compounds
!;A B of elements of groups V-VI. Data.on the.electric properties
2 3
Cim
2/3

_-~_;Rak~VtIM -AM
ACCESSION NRi AP4041747
of the new phase will be published in the future. "The authors
thank S. S. Kabalkina for help with the x-ray diffraction studies."
Orig. art. has; 2 tables.
ASSOCIATION: Institut fiziki vy*sokikh,,iavleniy AN S68B, Moscow
(Institute of High Pressure Physics, AN SSSR)
SUBMITTEDI 19Mar64 2NCLs 00
.5UB CODE: SS KR REP SOVs 001 OTHER: 002

ACCESSION NR: AP4043610 S/0056/64/047/002/0414/0418
AUTHORS: Vereshchagin, L. F. ; Kabalkina, S. S.
TITLE: Phase transitions in antimony at high pressures
SOURCE: Zh. eksper. i teor. fiz., v. 47, no. 2, 1964, 414-418
TOPIC TAGS: high pressure -effect, antimony, single crystal, cunic
synunctry, phase transition
ABSTRACT: This is a sequel of earlier work by the authors (with
V. P. My*lov, DAN SSSR, v. 152, 585, 1963), except 0-at single-
crystal antimony was used with A7 structure at room temperature.
X-ray diffraction studies have, disclosed the presencc- of t,,,,o re-
versible phase transitions: '11;b1 - SbIl (at.'~.70 kbar into .-.i primitive
cubic structure) and SbII --o. SbIII (at B5 kbar -- into a close
packed hexagonal structure). The pressure at which t.he phase tran-
sition took place could be determined by plotting the ratio of the
Card 1/2

ACCESSION NR: AP4043610
lattice parameters against the pressure. The phase transitions are
accompanied by an iracrease j.n the caordinaLi.on winber. In the first
transition the coordin,,.iLion number bocoitw!; equal to G (in place of
3), and in the second transition it becortics equal to 12. The uLoitlic
radius assui;ies in thir, case vi lur-,!5 of 1.49 and 1.66 A respe Ictively.
The rusulta have established that Llic first tranGiLio;l is thr~
of gradual removal of distorLion from the initial A7 r-tructure.
orig. art.. has: 4 figares and 4 taliler;.
ASSOCIATION: institut fiziki v_y*sokikh davleni-y Akademij- riauk
SSSR (Institute of 11i.9h Prir-,ssure Physics, Acadc.!my of 1r!cj.enc-2s S55R)
S UB MI TTE-; D: 25Feb64
ENCL: 00
SUB CODE: SS NR REF SOV: 004 ri 0 7
Curd 2/2

AccEssiou xR: Ap4ol2965 S/0020/64/154/004/0819/0820
AUMOR:' PWilov., Va V.; VereshchaCin.. L. F. (Corresponding Member Ali SSSR)
.TITLE: Parezaoaetic resonance in MnS in a wide temperature range
;SOO=: All SSSR. Doklady*, v. 154, no. 4, IA, 819-820
, TOPIC TXS: parmagnetic resmance, antiferranagaetic,, resonance absorptica,, mau-
.ganese sulfide
iABSTRACT: The present work was undertaken in order to find the reason for the
discrepancy in the results of otber airthors who studied the resonanco of uaiaxial
!antiferranapeties during the transition from the paramagnetic to tl-n andkrromac~
:nctic state. The resonance in MnS powder has been measured in the tem;porature
:interval between +100 to -195C at a frequency of 9285 Me. The app=atus, is de-
,scribed (essentially a double Dewar and heating arronGement). The =ztant ma0actic
!field of an electronaGaet was perpendicul= to the maGaetlc conporleat of the hic:h-
i frequency field at the locatica of the specimen. The resonance abs orptica ma,.sdm=
,at first increazes scmewhat with decreasing temparaturo, then decres,ses rapidly.
Card
-_ 1/2

r
ACCEWICK WR: AP403.2965
.The half-vidth of the absorption line increazes rapidly. The resur4 obtained
.agree with those of L. R. Maxwell and To R. McGuire (Rev. Mod. Fhys..22, 279
(1963))- OrU. art. has: 4 fivres.
'ASSOCIA=Off: Imstitut fiziki vyftokikh davleniy Alcademll nwk SM (Institute for
:High-Pressure Physics v Academy of Sciences SSSR)
swa=: 17oot63 ATD PRESS: 3045 ENCL; 00
SUB CCDE; GP NO REF S07: 000 OTHERS .007
Card ;/2~

4
I
.t, L
5
, ... I
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ol
. I

DENDI-I'LIANI, 11.11. ;~ VERILOSHCIIIAGIIIS , L.P.
Syntheuis of den3e mr,,JI~IcatIGn:; Gf sillica wit,~, 7,-,f r,-f' wat.,ar
I
I . ',!' 158 ri,-,.4 : 8 '19-220
at a press"ire of lrCJ-101 kglcl";,. -,
0 164. (MIPA 17:11)
1. Institut fiziki vysokikh davieniy 414 -"SSR. 2. Chler--korrespcn-
dent All ~`SSR (for Vereshchag.,n).

A C rF -~ 1. un
- - -- . - - ~.!)- 7, ~~ ;
. . . ~ I

.~o L I,'. " - - . -
-.., -- -f e imt on - n I n
of - - vhc a, &4;;, L r
- . 1: 1. v- -, viaor lamp re&wk!&IL' --
g- , -, A -
I I - - 1 21 in the fadlnX

- -; ~ f `~ !I ~-, e

i2l' K!

VERESHCHAGIN., L.F.; KABALKINA, S.S.
Phase transitions in antimony at high pressures. Zhur. eksrpa i traor,
fiz. 47 no.21414-418 Ag 164. (MIRA 17:10)
1. Institut fiziki vysokikh davlenly AN SSSR.

VERESHCHAG,114 L.F.; YAMI,KIIIIA,
Ef,fuct ct CTI fl,,, stricturo ()f prtl!Jiiri an] Indium. Dokl. AN
0 164.
ss:3rt ~.58
1. Institut f',zlki davlenly AN 50,5R. 2. Cblen-k--~rresrnndent
AN SsrR (fcr

7= -777
9a(a)/T/EW(t)/EWA(h) IJFW JD
ACCEMION NR: AM18741 UlVO0201651'16310021032610326,
AUTHOR: Vereshchagin, L. F. (CorrespondAng member Afl SSSB); NAb#OJdnap S. S.; J4
TITIE: Investigation of the influence of h1gh pressure on the structure of tin
oxide
SOURCE: AN 88811R, Doklady,* -Y. 163, no. 2. 1965, 326-328
TOPIC TAGS: pressure effect, tin compound,. crystal lattice structure., phase
I tremition
ABSTRACT: An x-ray investigation of the structure of SnO, was maAe at room tempera-
ture and pr-jaures up to 100 kbar. A special x-ray ct~a-e-r-a (DAN v. 151, no. 5,
.9 103; J6 Jamlenon and A. W. lAwson, J* Applo ftse V* 33, no- 3. 776, 1962)
with molybdenurn radiation war, used, the main part of vhtich was n pe1let made of
amrphous boron and a channel for the csample. lbe presGure coif.d be determined ac-
curate to t5 kbar. The reoults show that at high pressures SnO experiences a re-
versible phase transition..' In most cases this transition occuri at 40-50 kbar,
although i.,-je experiments It was observed at 15-20 kbar. Tie unit cell a-
meters of the hlgh-preanine phase are a - 3.42 1 D-M A and c - 5.62 � ...4 rr A
sWden change in val=e of 7.0 � 5% was observed during the phase transition (at
Card 1/2

.L a017-66
lAccESSXON NRt AP5018741
I* kbar) . The two phases differ from -each other in the order of arrangement of the
crystal layers and the arrangement of the nearest neighbors of the till atoms, The
results show also that the phase transiticn is reconstructive, in that the Sn ... 0
bond in the low-pressure phase is destroyel during the transitior. and a new bond
Is produced. it is suggented in analogy vith earlier data by others that at higher
pressures Sno wiU experience a polymrph '! tranaltion from a wurtzite structure
to a Wl structure. Orig. art. has: 3 !',gures nnd 1 table.
ASSOCIATION: Institut fiziki vysokikh da,-leniy Akadenit PAuk GS&q (Institutt of
IHigh Pressure ftslc~LAN SS~R)
SUBMIMEDs 06Apr65 ERCM 00 MM CCVz I go
MR BEF sovs 001 OVER: 307
1 Card

L 7086-66 EWT(m)/ET(7/_wWV!n) /--WP( t )/~,IWP b ijp(c)
(k)/FWP( )/EWA(h)/EWA(c)
'7
AVIMOR Veredhch L. F. (Cor-resvonding member AN SSSR); IrAbalklia, S. S.; Shule-
Inin, B. m.
OR,-,: ~sJ4:~s of AjEh F~7~ssures, Aql4erq of Sciences SS-~,R Institut
Rj
fiziki -rysokikh davieniy kk&demil nauk SUGS~,'l
TITLE: X-ray diffraction investl ati2
,0 of the compressibility of hercagonal selenium,.,,,
UP to 15 ar
SOURCE: AN SSSR. Dokladyp v. 165, no. 2, 1965, 29T-298
TOPIC TAGS: pressure effect,_su I lenium, x ray ditfraction study
perhigh pressure,,Ae
't
ABSTRACT: Earlier studies by the authors on. sikle-erystal tellurtun (ZhETF v. 45,
2073, 1963) are extended to include hexagonal selenium-. Tho x-ray diffraction study
we.g carried out in a special chamber, described elsewhere (aV v. 145, 818, 1.962), in
which the high-pressure vesse! was ~i -f-.e I metaiiic a chalme:
for the GaMple. AvIlatior. gasollne was une-d' to trangrait the pTessure, which w&5
mees,u_red --'th i- man--anin m-anc;rze4 er t t7 t !CC, har . The tiexagc nal seleni = nod i-
fication Was DTeDared from the amorphous one a~ ~~ kbar at 4,X,*. '1'e results ,Fig.
show that selenlun nas a highly anisotropic compressibility, similai to that of tel-
lurium. The results can be attributed to the fact that compression brings the lattice
structuree of the tvo substances closer to cubic. The pressure dependence of the com-1
ibility agrees vel-1 vitb data previously obtained by P. W. Brifl=an (Proc. Am.
press
Card 1/2 UDC- 539..,-)6

L ' o86-66
ACC NR, APW28273
5
0 -Al
4
Mn,~ar con, press lbt I ity of oelentum va pressure
P
bar
A-C
Acad. Sci v. 741 425, 1942). orig. art. hasi 3 figures and 3 tables. (021
SUB CODE i S&/ suBm DATE: 12Aug65/ OPIC REF: 005/ OV RIT: 003/ ATD, PRESS,~
aw

ARTSIII)VICH, L.A., akademik; KELDYS11, I.I.V., akademik; KAPITS'A, P.L., akademik;
H. ; VII "ISTOLIEORS, A.A.; SUMFIls, A.N.,
~'Tll) B., 'TIj':SIICI!AGI?I$ L.F.; I
akademik; D.V., akademik; a?ademik;
A,',8ARTISU,'M,N, V.A., akad.--mik; 71,1.11)OVICII, Ya.B.; N.N.)
al,ademik; KOTELINIKOV, V.A., akadpmik; LIFollITS, 1.:4.;
akademik; GINZBURG, V.L.; MILLIONSHCHIKOV, II.D.) okademik
Some probl.emp in the development of modern physic.-,; discussion of
the work of the I'Cpart:,ient of Genpral and Applied Physles. Vest.
All SSSR 35 no.2:3-46 F It'15. W.IM, 1(':3)
1. Chleny-korresnondenty All SSSR (for Vul, Vereshchal-in, 11istolIkors,
Lifshits, Ginzburg).

�'1f" gq ~10
MID
F-FLYU SHIN, N.D. DIKUSHIN, V.I., akadem1k, retsenzent;
-L.F., retsenzent; SUVORTJTA, L.N., inzh., red.
[selecting optiral variants of thick-walled structureo;
handbook] Vybor optimallnykh variantov tolstostennykh kon--
struktaii; spravochnoe posobie. Yoskva~ Mauhinostromle,
1965. 81 p. (1,11RA 18: 6)
1. Chlen-korrespondent Ali SSSR (for Vereshchagin).

N,

_ZUE" ~t, ~66-2_t~_0_9_60__UkCi
s-
AUTHOR: Vereshchagin, L. F. (Corresponding member AA SSSH); Zubova'
Yes V*; Ova$ I* a
ORG: Institute of High Pressures, AcadeTy of Sciences SSSR (Inotitut
davleniy Akademft nauk SSSR)
TITLEt Measuring pressures up to 100 kbar/by the free-plunger method
- Im I
SOURCE: AN SSSR. Doklady, v. 169, no. 1.1 1966, T4_76
TOPIC TAGSt pressure, high pressures pressure measurement, high
pressure measurement, pressure gage, high pressure research, metal
ABSTRACT% A pressure gage based on the free-plunger principle, for
measuring pressures up to 100 kbar, has been designed and built. The
pressure in the high-pressure chamber in measured directly by a spring
dynamometer connected to a free plunger (see Fig. 1). The friction of
the plunger is reduced to an insignificant value by the special con-
figuration of the plunger, and by a special lubricant filling clearance
Ce The top and bottom ends of the plungerare coaxial cylinders, which
ensures the stability of'the plunger and prevents a runoff of the com-
pressed substance, The pressure gage was used for measuring the
pressure of the polymorphic transformation of rsomt~ metals. The
2 UDC: 539.89

L ~81127-66. -__
ACC NRt APW440~
D
C
Ali C
Fig. 1. Scheme of
a piston-type
manometer
6
A - Plunger;
B - dynamometerl
C - clearancei
D - pressures
SUB CODEt 20/ SUBM DATEt 1OFeb66/ ono REr:
OTH REFi 002/ ATD PRESS: 5-OLI-I-S
obtained values agree vell vith those found by
other scientists for polymorphic transformations
Bi I-II, Bi II-III, and TI 11-111 (25.4, 26.9,
36.7 kbar, respectively), The gage facilitated
the measurement of pressures above 40 kbar; for
instance, for polymorphic transfornations Ba II-Ir
and Bi VI-VIII measurements yielded pressures of
58-5 and 89.3 kbar, respectively. Orig. art has:
2 figures. 1. (WWI

L 0449C-n) LWT( E:-) /T/Li'4p
A:cc_t4_-_ A P6'03'1-429-----__--- S-0-U,RC-E- -C-OD-E:,---,-UR/00-5-6-/-6-6/-051/-002/0377/0332
AUTHOR: Kabalkina S. S. ; Veres hchagin L. F.; Kotilevets, A. A.
ORG: Institute of Physics of High Pressures, Academy of Sciences SSSR
(Institut fiziki vysokikh davleniy Akademii nauk SS-_S_R)
TITLE: Phase transition in TeO 2under high pressure
SOURCE: Zh eksper i teor fiz, v. 51, no. 2, 1966, 377-382
TOPIC TAGS: phase transition, high pres,sure research, high pressure,
tellurium dioxide, x ray diffraction /
~,BSTRACT- The ef 'ect of high pressure' on the structure of the tetra.gonal
phase o?~ITeO2~ls investigated. An x-ray diffraction tudy' of the
structure of-Te02I at room temperature and under pressures up to 100
kbar was carried out in a special x-ray chamber which included an
amorphous boron pellet. The experiments show that at p > 30 kbar,
TeO21 undergoes a reversible phase transition of the first kind. Accord-
ing to the data obtained, the hiph-pressure phase (Te0211) possesses
a rhombic.lattice cell with the following parameter values at p - 60 kbar;
a - 4.22 A, b - 4.84 A, c - 3.67 X, z - 2, p - 7.07 g/cm3; it belongs
to the Fedorov Pnnm group. It is suggested that the high-pressure phase
Card IL2

1, 01;,1~90-A'7
NR- AP6031429
is of the CaC12 type. The effect of pressure on the parameters of the
unit cells of the Te021 and TeO21I phases is evaluated. OrIg. art.
has; 4 figures and 2 tables. [CS]
SUB CODE: 201 SUBM DATE: 2SJan66/ ORIG REF: 003/ OTH REF: 015
ATD PRESS: 5083
Card

ACC NRs * -AP60.37065 .---.S-OUR.C-E--..
(A) COD : UR 0056
AUTHOR: Kabalkina, S. S.; Vereshchagin, L. F.; Serebryanaya, K. R.
ORG: Institute of Physics of High Pressures)Academy of Sciences~SSSR (Inatitut flzi~
vysokykh davleniy Akademii nauk SSSR)
TITLE: Germanium telluride phase transformation under high pressure
SOURCE: Zhurnal eksperimental'noy I teoreticheakoy fiziki, v. 51, no. 5, 1966,
1358-1362
TOPIC TAGS: germanium telluride, rVs ructure,
phase transformation, pressure effect
ABSTRACT: The effecL of high pressures up to 100 kbar on the crystal structure of
GeTe has been investigated. A phaqe trannition from a rhombohedral phase GQTeI
(A7-type) to a cubic phase of GeTell (NaC1 type) wao obovrved, X-ray diffraction
analysis showed that at 35 kbar, the ratio c/a changes from 1.27 (GeTel) to 1.224
(GaTeII), involving a volume change of 3%. In view of the presence of a continuous
transition GcTeI - GeTell at 400C, it In nonumed that a critical point exists on the
Ge-Te phase diagram& Orige art, has: 5 figures and 1 table.
SUB CODE: 90, SUBH DATE: 16Jun66/ ORIG REF: 0071 OT11 REF: 005/
Card

ACC NRt AP7003645 SOURCE CODE: UR/0020/67/172/001./0076/0()76
.AUTHOR: Kalashnikov, Ya.A.; Feklichev, Ye.14.; Sukhushina, I.S.;
iVereshchagin,.L.F. (Academician)
IORG: Institute of Physics of High Pressures Acadeny of Sciences, SGSR
I I
I(Institut fiziki vy8okikh davleniy Akademii:nauk SGSR); Moscow State I
~Univers"XA(Mqskovskiy gosudarstvennyy universitet)
TITLE: Production of ballas-type synthetic diimonds
SOURCE: AN SSSR. Daklady. v. 172, no. 1, 196T, 76 and insert facing
1P. 76
TOPIC TAGS: diamond, synthetic. diamond*"p4%oA*.*.,,b,."ft4;wyypttte-t-,!~c
d4Aa&gr4A structure
ity
ABSTRACT., Synthetic diamonds up to 6-6.5'm'm in size with a central-zone dens
1higher than, that of natural diamonds have been produced. The density
decreases to standard level at the specimen surface, which consisted of
fine bound crystals- The internal and surface structure of the synthetic
diamonds~cowpared very closely to the ballas structure of natural diamond.
I _. . -_ - ___ J.AZ 1.
SUB CODE: 11 1 13/ SUBM DATE: 246ep66/ ORIG REF: 001/ OTH REF: oo6f-
ATD PRESS: 5L4

ACC M AF7005581 soulicE--ddbt.--W66~6/6f/172/002/0313/0316
AUTHOR: Kabalkinap S. S.; Kolobyanina) T. fi.; Vereshchaginp L. F. (Academician)
(Institut fiziki
ORG: Institute of High Pressure Physics, AcaderW of beiences..
vysokikh davleniy Akademii nauk SSSR)
TITLE: X ray diffraction investigation of the crystai structure of iodine at high
pressure
SOURCE: All SSSR. DokladY# v- 172# 2p 1967) 313-316
TOPIC TAGS: x ray diffraction study, iodine, high pressure v~search, crystal lattice
structure, moleculir crystal
ABSTRACT: The tests on iodine were made because at high pressure it is one of the
few elements having a molecular structure, and may be the only element in which struc-;
ture investigations can be made at room temperature. The authors carried out an x-ray,
diffraction study of its structure at room temperature and pressures up -to 60 kbar,
using a procedure described earlier (DAN v. 151, 1068, 1963) and molybdenum radia-
tion. To improve the diffraction pattern, the iodine was tested in powdered form.
The observed appearance and disappearance of several lines is reported, as well as
coalescence of some lines with variation of pressure. In addition, the pressure de-
pendence of the volume of the iodine and of the paratWters of its lattice structure
are plotted. The results indicate that pressure does'nat change the initial rhombic
structurep merely distorting it and leading to some rotatior of the molecules. It is
Card 1/2 UDC: 539-89

ACC -NR,'--AP7OO~0'1
pointed out in the conclusion that in view of the arabiguities involved in the powder
method, further research with single crystals is necessary to check on the conclu-
aions concerning the structure of the high-pressure phase of iodine. Orig. art. has:
4 figures and 2 tables.
SUB CODE: 20/ SUBM DAMI 238epa/ ORIG REP: ,003/ OTH REF: Oll
0,

GILLER, S.A., akademik; VERMUCHAGIN, L.I.; VFNT-r'.F, K.K.; KORSWRIOV, S.P.;
TSIRULE, VOv. Rei-rule, V.]; LOLYA, D.O.
2-Furyl and 5-nitrofuryl-2-acctylere ketones. Dokl. AN SSSR
164 no.109-102 3 165. (MIRA 18:9)
1. Institut organicheskogo vintezu AN Lr'viyskoy -IS11 I Inntitut
nefte- I uglekhimicheskago sinteza pri Irkutakom gosudarctvennom
universitete im. A.A. Zhdanova. 2. An Latviyskoy SSR (for Giller).