SCIENTIFIC ABSTRACT PERSHITS, YA.N. - PERSHMIOT, YA.A.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001240120010-0
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 15, 2000
• Sequence Number: 10
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT


ACCESSICN NRt AP4036566
S/0139/64/000/002/0131/0135
I AUTHOR: Pershits, Ya. N.
TITLE: On high temperature electrical conductivity in alkali-halido crystals with
impurities
SOURCE: IVUZ. Fizika, no. 2, 1964., 131-135
TOPIC TAGS: electric conductivity, alkali halide, vacant point, lattice, absolute
zero, potential balTier, activation energy, ion capture, potassium chloride,
potassium bromide
ABSTRACT:: Electric conductivity expressed as a function of temperature in Olkali-
halide crystals KCI and KBr with electrolytically added Cu* ions was determined,
Analytically, this is expressed by
q Ae xr - Be ,r
where F, - work necessary to create a pair of vacant points in a lattice at
absolute zero temperature, c..;,, - height of potential barrier for lattice ions at
C.T

ACCESSION NR: AP4036568
abscluto zero. &-perimental graphs were plottod for or- (11f ), and the
activation energy E of both KC1 and KBr was determinod from these graphs. In
electron-volt units, E is 2.06 for KC1 and B is 1.97 for KBr (B a E/2 + 4)1). it
is sho--m that the increase in electric conductivity of the alkali-halide crystals
is caused by Cu* ion capture in free lattice points. Orig. art. hast 6 forimLlao,
4 figures, and 1 tablee
ASSOCIATICK: Pskovskiy gospedinstitut imeni S. M. Kirova (Pskov State Teachers
College)
suBmiTTED,,,. 17mar62 DATE ACQ: 05Jun,64 INCLt 00
SUB CODE: SS
4crrd- 2/2
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CLs Llef. ilb. glektro'.Alm. I. encr(;., Aba. P20
OCT,
A'J' 7 i.. its PerchAu. Ya. 14
T!"'i-l't Effoat of foreign Ions on tho alectria conductiv-Ity of allealk-ha
crm,tala. Abstract
C*T--*t SLWICEs Izv. Loningr. oloktrabEkbn. in-ta, vy*p. 51, 1963, lob
TC:~`C TAGjs Icnic crjatal. orystal conduettvity, forol-n iow in c;y3tal,
C~~Jll llal-)Ceno cinjatal
(m cloctrolirtic introd-,iotlon of Cu-Iona Into alkali-halor:one crystals
(',r,], X-tw), a parallollan can bo soon beWoon t~e lo-arithnic linea of te...-poraturo
vs. conductivity for pura cryztals and thoso for the orfatals ult'.~ imnurlty
Intreduced un te the saturation point at Cho measurem-iont tor'.Peraturo. Thma, for tho,
It! bipurity- conductivity, Ue ae'llvatle,n ener,-7 coincides with ttat
rx1orlty carriora. Tho position of the front of tho ion cload leaving the
Cr/Slal and tho curront zoazurad In the ci-jotal remit doteminlai; tho axbility
and ecneontration of forolm lons, The activatlon-enorf-j componants are determined
r % he tw
f
z te iporaturo-condactivity curve and tho =bIlity [Fskovskiy gos.
pcrd.,.-ogIcb. In-4 Ime S. H. Uroval
1/1 DA73 ACQs IOAPr64 SUB COMs 9V,' SS =1 00

3J
17

PERSHITS., Ya-.K.; GUTMO, V.I.; ANGSOVA, A.I.
Effect of foreign ions on the electroconductivity of irradiated
alkali halide crystals. Izv. vys. ucheb. zav.; fiz. no.1:3-7
164. (M] RA 17 -.3)
1. Pskovskiy gosudartAvennyy pedugogicheskiy institut imeni
Kirova.

PERsHrTs, U.N.
Motion Df metal ions in alkali halide crystals.
no.207t*L32-148 161.
(MIRA 16g5)
1. Pako-eskiy gosudarstvanny-y podagcgicheskiy Institut imeni S.M.
Kirova.
(Alkali metal halide zrystals) (Metal ions)

PERSIIITS,,..Y GUTMAN, V.I.
Effect of capture centers on the electric properties of alkali
halide crystals. Uch.zap.Pbd.inst.Gerts.no.2G7sl49-162 161.
(MIRA 16
1. Pskovskiy gosudarstvennyy ped~glcheskiy institut imeni SiM.
Kirova.
(Electrons-Capture)
(Alkali metal halide climItpes--Electric properties)

MSHITSP Ya" No
Effect of strange ions on Um electroconduokvity of alkaU
netal haUde crystals. Izv. vye. uch. Sav.1 fiz. 323-8 162.
(MIRA .15:10)
1. Pokovskly pedagoeicheakiy institut imni S. M. Kiffta.
(AJM3.i ustal halide crystals-2ibetric propolfties)
(Ions)

2/XWP(q)/EWT(m)/BDS/T-~ AITTC/"D/SPD- PU-4
i 1304.~'
4 PAM -
ACCESS1011 NR;- AP3DO0613
toy
AUTHOR. low
TI= rhe mechantsm of changina conductivity during aging of YnAIIS ceranLes
-be keetrolyj,13 of alka.111-halide crystals
and +
W=,, ;~Fizilm tv~rdogo tela., V, 5. no* 5v 1963.,11348-1357 %
~tdntalum, alkali halide, ceramic aging, resenera-
1-71OPIC TMIS: rutil titanium~
.1 tloni F--,,,'enter., C%'Mr, dislocation.,conductivity,, rutile cermdc, rut.ile.
cerar:&c iN;Ing
41
AWMACti' The aut4or'n purpose In to show experimentally that not only
regenerwtjon but atso succeeding aging of 'An-bearing ceramics con:for= to the
same.pa*~erzi ibatjs observed in alk-I *1 -halide 'crystals' during compiwaie rciethods
of Investigatich. In his experiment be used the staining Method with S flat
tantalum: electrode' and found Weat: similarity between the .Ti-bearing cermles
J'and the i0knI-1-hallde3. His'results show that at relatively.low temperatures
(10D-3001~.-) the move.t~,t of added current carriers tokes plsce within the: crystal
4 grains g dislocations that remain in
Car, ratile Or within wssic blocks, forrAn
Ithe c ers could be F-centers,but since such
rystal after annealingo These carri
4card 7/2.

A-487= M; "3000613
xi~~Ji -Mv~* b,e ~divplaced only vhen Ionic conductivity In yrezent.,* aging' early
t tratures giving Mte to marked displacement of Ions Inthe.elee
begiz~ a teMe
Icia field. 1he Identical haractdr of -'them tim relationship of curr=t at all
texNkratvres, tring which aging vas observed clearly yoints to electrolytAc
oo,
opses In satociation v1th obange f= rapneration to ronewed aging even at
w
'low leveraturas, Considerable doat Is cast on data suggesting the electrolytic
condiictivity Is absent in titardum o~dde,
it Is more I:Lkelv that the e2ectrolytic
prodt, ts gathers at the boundaries of wassic blocks or crystal'grains. ne aging
of T16-bearing cerandes at high terVaratures is associated with the spread of Current
carriers, from both electrodes, but regeneration is associated vith the izwmnt
6etrcn cipids. Orls. art. hast. 8 figares, 2 tables,, and I I formulas.
of el
hS=,MTj PSkj:~VS]M, -S. H. Kirova,
V gosudarstvenrW*y pedagogicheskiy institut in.
State Pedagogical ImUtute)
P-skoy
SUMMr4MM: OSNcw62 DAIE ACQ: 11 JUa63 MM: 00
SUB 0#,; 00 IND W SDV: 012 OnW: ODA
Ca 2#1~
-- - -------

PERSHITS. Ya.N
Mechanism underlying conductivity variations in the aging of
rutile ceramics and the electrolysis of alkali halide crystals.
Fiz.tver.tela 5 no.5tl348-1357 My 163. (NIRA 16s6)
1. Pakovskiy gosudarstvennyy pedagogiche8kiy institiit imeni
Kirova.
(Ruttle--Electric properties) (Alkali metal halide crystals)

PFMHITSP YEL.R.; GUNAZI, V.I.
Effect of foreign ions on electron processei3 in ionic m7stals.
Izv.vys.uch.mav.; fiz. no.4:123-129 162. (MIRA 111:9)
1. Pskovskiy gosudaretvennyy pedagogichesk:Ly institut.
(Ionic crystals) (Electrons)

s/139/62/ooo/oo4/010/018
E132/E435
AUTHORS: Pershits,.Ya.N., Gutman, V-1.
TITLE: The influence of foreign ions on electronic processes
in ionic crystals
PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Fizika,
no.4, 1962, 123-129
TEXT: It is established that the influence of added colouring on
the electrical properties of alkali halide crystals is caused by
the presence in them as impurities of heavy metals, the ions of
which act as centres for trapping electrons. The trapping of
electrons by foreign ions in crystals irradiated by X-rays has been
studied experimentally. A means of colo 'uring crystaln from a
plane metallic cathode is described. Trapping of electrons by
ionic impurities leads to additive oir subtractive colouring of the
crystal. As a result of additive colouring the neutralization of
impurity ions takes place decreasing the number of trapping centres.
The trapping of electrons leads to changes in the electrical
properties of the crystals. There are 6 figures.
ASSOCIATION: Pskovskiy gospedinstitut (Pskov State-Pedagogical
~UBJIUJD: May 3s 1961 Institute)
ar

3 2 0311.
S/139/62/000/003/001/021
Eo39/E420
AUTHOR: Porshits, Ya.N.
TITLE: The influence of impurity ions o),,% the eloctriral
conductivity of alkali-halide crystals
PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Fizika,
no.,3, 1962, 3-8
TEXT: Copper ions are introduced into KDr crystals by passing "J_
an electric current through the crystal using a copper anode.
The temperature dependence of the electrical conductivity of' KBr
is measured for different temperatures of introduction of copper
and the activation energy is shown to be - 0.1 ev less than for
the pure crystal. There is a significant increase in
conductivity as the Cu* ions enter the crystals and a
corresponding decrease when they are removed by reversing the
direction of the electric field. Measurements are made of the
mobility of copper ions in KBr, KC1 and NaCl. The temperature
dependence of the concentration of copper ions coincides with the
temperature dependence of ionic vacancies in the crystals
(at bqP-~C the concentration of ions is - 5 x lol7cm-3).
Cardli/v

PERSHITS, Ya.N*
Aging and regeneration of ceramics containing titanium. Fiz.tver.
tela 3 no,n;*95-3502 11 161. OMA 1-4: 10)
1. Pskovskiy gosudarstvennyy pedagogicheskiy institut im.
I&M.Kirova.
(Ceramics) (Titanium)

I.T.2 L40
AUTHOR: Persh its, Ya. N.
TITLE: Ageing and reooveri of titar.. ir
30792
16,?/003/011/036/056
-%.ruing ceramics
PERIODICAI: Fizika tverdogo tela, v. 5. r ~, 1, *961, 3495-3502
TEXT: The electrical 'conductivity of ceram, - -.-r.-.-_1ning titanium
increases then a constant electric field L_iz for some time. Thia
process is termed ageing. When the direct.,~T. 1_' -~,e field is reversed,
electrical conductivity will rapidly drop aa,.. 4t.icn process is called
recovery. The variation of current with t~a., *~,q mtasured in T-80 (T-60)
tikond ceramics in the temperature range 16"_ -`-1 '' Disks with graphite
Reeovsr~ .i. --iti)d theoretically as
electrodes were used as samples.
the migration of an additional-carrier c1C.'! grain boundaries.
This was confirmed by experiments which :il' the mechanism holds
good at lot, temperatures (i.e. t