SCIENTIFIC ABSTRACT V.I. CHECHERNIKOV - Y.S. CHECHET

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SCIENTIFIC ABSTRACT
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'36603 /u L, S /126/62/013/003/019/023 E039/El35 AUTHOR: Checherpikov, TITLE: The magnetic susceptibility of the rare-earth metals. Ho, Dys Tb and Gd PERIOD ICAL: Fiiika metal;ov i metallovedeniye, V-13, no-3, 1962, , 458-46o TEXT; The study of the magnetic properties of the rare earth~metalz is of interest inasmuch as the magnetic effects of the electrons lin the 4f-shell are well screened by external electrons from the.influence of other atoms. Previous investig~ttions-have been limited mainly to the low temperature region. This paper describes the results of an investigation of" the temperature dependence of the magnet~lc ounceptibility of the polycrystalline metals Ho, Dy, Tb and Gd in the temperature range 300-1500 OK. The metali were 99.5% pure and their magnetic susceptibility was measured in an apparatus based on the ~araday-Sixsmith method. The apparatus was calibrated by means of electrolytic Ni and a NI-Al alloy (5 wt.% Al) for which the Card 1/3 D S/126/62/013/003/019/023 The magnetic susceptibility of ... E039/E135 data are well known. It in shown that the metal Ho follows the Curie-Weiss law over the whole t',emperature range iuve~tigated. This agrees with the results of other authors. From this are obtained values for the Curie temperature (88 OK) and the effective magnetic moment (Pj = 1o.6 In the case of Dy there is a slight deviation from the Curie-Weiss law at temperatures over goo OC. Its Curie temperature is 148 OK. Gd, which is ferromagnetic, is studied near to its Curie temperature'(17 OC) and it in found that there is no transition region at the ferromagnetic transformAtion point. Gd obeys the Curie-Weiss law for temperatures between 300 and 650 OK. Of the metals investigated only Ho followed the Curie-Weiss law over the whole temperature range 300-1300 OK; the others deviated at h:Lgh temperatures. This may be qualitatively explained by the theory of Van-Fleck which suggests -that the magnetle susceptibility has two components, one of which in temperature- dependent and the. other, a high frequency term, which is not. There are 3 figures. Card 2/3 The magnetic susceptibility of S/126/62/013/003/019/023 E03,19/E135 .,ASSOCIATION: h'6zkovskiy gosudarstvennyy universitet.imeni M.V. Lomonosova (Moscow State University imeni M.V. Lomonozov) SUBMITTED: july 8, 1961 lumestigation of nickelWaftlum forrites In the transition region. VestJb&kvn.S*r.3.Fiz.vastrOj. 17 no.2t2O.23 Mr-4p, 162, (MM 16 s2) 1. Kafedra siagmetismia NDskovskogo, univeralteta. (Ferrates-4bgnetic proportion) 3709%/056/62/04 2/004/005/037 1?4 B1 02/t1 04 ADTHOR: Chechernikov, V. I. TITLE: Anti~erromagnetism of iron-nickel alloys PERIODICAL: Zhurnal elcaperimentallnoy i teoreticheskoy fiziki, v- 42, no- 4, 19629 956-958 TEXT: The temperature dependence of the paramagnetic susceptibility t of Fe-Ni alloys was measured at T>Qf (of - ferromagnetic Curie point) with specimens containing 4-7) MY 14-4, 19-3, 27, 29, 30-9, 34.9, and 36.84. Ni. Special attention was paid to the y-phase of these alloys. The susceptibility measurementa were made in the range 300-15000K by the Faraday-Sucksmith method in an argon atmosphere. The curves 11X, - f(T) of the specimens with 27, 29, and 30. Va show a step which is indicative of an ar,?y transition. The 2V alloy has the highest step (at 82&K). k of the 34-9 and 38.8% alloys satisfies the Curie-Wei8 law in the whole temperature range (no phase transition). Of the lower alloyed specimens only the y-phase was investigated; 1/7L - f(T) is a straight line. Also the magnetic moments P and the paramagnetic Curie points 9 of the Card 1/2 P . P S/05 2/042/004/005/037 Antiferromagnetism of iron-nickel ... B102YB'104 y-phases were measured, depending on the Ni-content. PP of alloys with more than 500/16 Ni decreases linearly with increasing Ni-content. OP is a non-linear function of the Ni-content. It has a broad maximum at about 601jl~ Ni; in the range 30-4Vt'o it decreases rapidly, and at 20% Ni it changes its sign, i.e. the y-phase of the alloys with less than 20i". Ni and also the phase of iron have a negative paramagnetic Curie point. This is due to the fact that, because of the negative exchange interaction between the iron atoms in the y-phase, the number of antiparallel spins increases. By extrapolating to pure iron, F P - 7-4 and Op a -30000K is obtained. This agiees with the Sucksmith-Pearce results (Proo. Roy. Boo. A167P 189, 1938). 'The result that,in the I-phase at 4 2011 Ni, negati,/e exchange interaction occurs is in agreement with the theory of Ye. I. Kondorskiy. There are 3 figures. kSSOCIATION: Moskovskiy gosudarstvennyy universitet (,Moscow State University) SUBMITTED: November 4, 1961 Card 2/2 3948o S/01!6 1652/U3/~02/3 /053 ')3104 10 v 3 AUTI-10,28 Chechernikov, V.__ Afonina, L. N. 13 TTv Antiferroma,-netic pro-jerties of the gamz:ia ohaue of 2a an Fe-Co alloys ?ER 10DICAL: Zhurnal eics-3erirent-allnoy i teoretichesiro'- i z V. no. 2(8), lcl;62, 429-431 TEXT: The teriperatire dependence 'X(T) of the susce--)tibility of 1e-111tiand Pe-Co.corkta-Lning- 3.08, 4.80, 6.066, 8.71, 10-90', 13-30, 22-70, and 30.00 at;;'~ Pt-, and 5.1, 106.2, 25.0, and 34-9 at'/;tO Co -aas investi3a-Led t-, -P a "latent" antiferromagnetism in'the gamma phases prove the presence o- assumed by Ye. 1. Kondo-zski and V. 11. Sedov (Zh!:T-F, 35, 1579, 1953) 2de-NTi alloys. )C(T) of each of the alloys was measured -in the rankle S50-15000K uhere both groups of alloys show a linear course of 1/-/, f (T) The parama8netic Curie -poi'it (G P ) and the af"fective magnetic moment ? ue:~-a also --ensured in each case. In alloys containing Pt e- 14 at"'i and Co < 106 at','. 0 is less than 0. P drops slizhtly with increasing percentalge of IFt or P P Card 1/2 Vo 5 0/0 53 Bl D2/ Antife.-roma8netic PrOpOrties Of 'he ... 3104 Co. Por e.c. pe+3.08 at,/l'o Pt, 1? =06.26 g. and 9,,- -1500-1--i. There are p 3 fi-frures. ASSOCIATION: Yoskovskiy osudarstvennyy universitet State University) SUBMITTED: 1..Iarch 1,/*, 1962 FROP6~eL Y)6,ucul-q Card 2/2 HERNIKOV VU:k ano_ ich, red.; CHNG vj~7yich; KONDORSKIY, Ye.I.,, prof., .A. A ~--M-Z ", - . r ORSEVA. C i6d.; CHISTYAKOVA, K.S.,, tekhn.red. [magnetic measurements] Magnitzwe izmereniia. Pod red. B.I.Kondorskogo. Moskva, Izd-vo Mosk. univ,, 1963. 284 P. MIRA 17:3) 5162 S/198/63/000/001/003/014 B104/B102- 'AUTHORBs Chechernikov, V.,Ieg Lyubiitin, 10 -5. TITLE: The temperature dependencevf the,magnetic susceptibility and of resonance absorption in Cr 03,.-*no,a~md Nio 2 PERIDDICALt Moscowe Universitet.. Vestnik.; Soriya III. Fitika, astronomiya;, no.,.1, 1963., 20 23 T.T,,XT:Astudy was-mad~ of the temperature-dependence of the magnetic sus-',~: c4ptibil-ity (100 - 13000K) and of the resonance absorption (3,.!-qp range) in the polycrystalline an',;iferromagnetic compounds Cr 0 MnO, and NiO. The 2 39 samples made available by R. Z. Levitin were of 1 mm diameter and 3. mm high. Measurements were made in an argon itmosphere.. The magnetic Bus- ceptibility of Cr 0 has a sharp.maximum at 3140K; that,of NiO a ~rosd 2 3 maximum at 640 OK. The lower thatemperature'lies uider the antiferro- magnetic Curie point (Q f OK) the strongoz~is the dependence of the, susceptibility of Cr 0 on.the magnetic field. For T > 9 the suicepti-'-.'.: 213 af bility decreases with increasing tempqrature; this dependence is less Card 1/3 Y S/188 63/000/001/003/Ofl4 YB The temperature dependenceof the ... B104 B102 pronounced in the ferromagnetic region. The susceptibility of NiO decream with increasing field strength. This is explained as due to the existence-,, of ferromagnetic impurities. The susceptibility is independent of the field strength only above 1040 OK. It in assumed that 9 of Cr 0 is 4n- af 2 3 dependent of the magnetic field strength and that,Q of NiO becomes lower.' af with increasing field strength. Study of the temperature dependence'of the.. susceptibility in the paramagnetic region shows that the Curie-Weiss law ii~', -valid. The paramagnetic Curie point, the Curie-Weiss constant and the magnetic moment (Table) are determinede Por tomperatur9s below 0 the af stant value. The resonance absorption of Cr 0 falls steeply to a con 2 3 decrease of the resonance absorption of MnO'begins already-in the para- magnetic region. The half-width,of the resonance absorption in CrO re---;,. 3 mains constant in the paramagnetic-'region; it rises steeply at 0 MnO... af shows similar behavior. The following values were obtained for the g-factors: g 1.87 (Cr 0 and g 1.90 (MnO). There.are 4 figures and 2 3 1 table. i/188/63/000/001/003/01 The temperature dependence of the BIOJJ~102 ASSOCIATIONs Kafedra magnetimma (Depprtment of Magnetism) SUKiITTED: May 8, 1962 Table. Paramagnetic Curie point (0 p 0 0 K).1 9 K; Curie-Weied constant;' &f magnetic moment. -~ Table 60., K O;r !K -C. rpm -PA Ij, Ii 4510 -2m 314 3 4 2 2 Sa - 7 - 640 8 5 4. ADO -227 1220 06 3. 4.9B dard 3/3 L 18327-63 EwP(q)/zw(m09Ds AFprc/AsD JD/JG 4 (0126) E-M-9 C 9 N R AP3002854 AMORSt Cbechirni)=T, V. To;_Pop# Tulin, ITTM -Relation of tesperaft" to paramagnetic suseeptibility ot -Od-T-alloys lovedeniye# v. 15 no. 6, 1963 19-4 OURCEs FizlkR metallow I metal 13V IOPTC TAGS: Gd-Y alley, magnetic property.. electron structure ABSTRAM The Gd-Y alloys with a general compositions 25. 509 65j 75 and 90. 6t.% ied at temmratures of j00-1500K.I~q These samples were chosen becaime tr they form a continuous series of solid solutions In the whole interval of e0neen tion,and they have the some hexagonal close-spaced lattice. The purpose was to- Investiff ate the magnetic properties, the electron structure and the nRture of the Interaction between these rare-earth metals which have an open 4f-shell. The .results sh3wed that the reciprocnl of the specific suiceptibility followed the Curie-Weiss law Rlonp, the whole temperature interval of the investigation, i.e., it had a linear* relatton to temperature. The effective magnetic moments per alloy,~. atom and per Gd-atom as wall as the pnrnnagnetio Curie points were calculated on the' basis 'of these dhta. The increase in yttrium content caused a sudden drop in the Curie point and a decrease in the effective moment of the alloy. The authors ic L 18527-63 ACCEMCK WRt 03002854 conclude that a gradual change in. Gd-Y magnetic Weperties occurs with the Increase in yttritm content. 'The gadolinium atom may be regarded an being In afree state the ancy. rts, magnetic properties are determined basically by the spine of electrons located in the 0-shell. Orig. art. beat 2 figures IASSOCTAITCRt Voskovs)dy gosudaretwenny*y wilversitet In. M. V. lazonosova (Noscow IStats Univer SUBMT72M MoY62 DAIS ACQs 23J0163 INCLS 00 SUB CME: IAL NO REP SOFs 001 OTMRs- 006 2/2 CHECHFM4IKOV V I. BUROV, I.V. ; SAVITSM, le.He Magnetic properties in tho system iron - gadolfiniuva- Fiz. int. i metalloved. 16 no.3:324-328 S~ 163. (NIRA 16:22) 1. Moskovskiy gesudarstvamiy universitat imni Iomermava i Institut wtallurgii iwni A.A,,Baykova* CHECHERNIKOV, V.I.; KASHLINSKIY, A.I. Temperature dependence of resonance absorption in nickel-zinc ferrites. Vest. Moak. un. Ser. 3.-Fis., astron. 18 no.5:49-53 S-0 163. (MIRA 16:10) 1. Kafedra magnatizma Moskovskago gosudarstvennogo universiteta. ICHUNIM V.I.& IULIU FOFj HAUNKINp 0J.; TERMOVA, V.F. ===A-:m~ - Mapetic proportion of ocaudium. 2b=. eksp. i toor, fize 44 no.1 J67-389 Ja 263. (MM 1635) 1, Moskovskiy g9sudarstyemW universitet J., ~Wtitut mtanurgii AN M& I (Swadiuw-YAgn9tic properties)I CUCHERNIKOV" Me; Some magnetic properties of gadolinium single crystals. Zhuro Wwp& i teor. fize 45 no.4 :867-869 0 163. (KMA 16:11) la Moskovskiy gosudarstvennyy universitete CHERNIKOVI V. I. land POP, I., Nagnetic Properties of Some d- and f-Metals." report presebted at the Symposium on Ferroelectricity and Ferromagnetism, Leningrad, 30 May-5 June 1963., paramagnetism of the Curie-Weiss type* Orig. art. has: 6 figures. COM Lj~96 ~,Z5 DIT(M))Fod~~~)/i~~id)/EWP~(t)/EWP(b) ID -0 OAV JDIJGIMLk 0)dF ACCESSION NR: AT4048695 ?I MOO 0'0_9jSR/j'8 070 00W 'the op I Nau kIn,:O. P. AUT MR;. chernikov,, V~ I.., V M TITLE: Magnetic of.monocrystal1ine and polycrystalline 5candium SOUAC.Ei., :Vsesoyuznoye soveshchantye ~o;splavam redKikh metallov, Iq630'V'oprosY--'- An teori-i-~F-primeneniya. redkozemel y*kh-metal 4ov- -(Problems Jn-the-thwor-y-and-use Z rare-carih.metals);.Maieeial'y*-'~oveshthanlya. Moscow, lzd-vo Nauka, 1964,..67-70, :TOPIC TAGS I seandium, d noo ymium, scandlum single crystal, polycryst0line licandiumo scandium'magnetic property .:ABSTRACT, The.magnetic.propprti6sof most paramagnetic transition metals havelbeen studied in detail over a wide temperature range. Scandium, however, has not been -:-due to the difficulty of obtai tested -for magnetic properties, ning pure scandium. Investigations of the magnetic-prop rties of scandium will provide important in e formation on the degree of localization of d-electrons and the distribution of electrondensity in the Iattice.- In the present.work, the magnetic susceptibility 'was measure in a vacuum between 77 a-d )IOOK by the Faraday-Seksmit method, in: d n which the force acti n9 on the sample Is measured.by a thin elastic ring made of beryllium brohze. Two reflectors are placed on the ring and a light beam is re- from the first reflector onto the second and into a cathetometer. -Deflec- L 14963-6 . ... .. ..ACCESS I ON NR: :AT4o. 8 4 695 IF them r n accur acy .of 0 00). mm Si nce sca ~t ion o* ay. i s determined. W th'. a ndium i s a -M is p: I a,y-, an 'd -important role -Tests show that-lncreas-~ weakly agnetic.met6lj:a mixture -;in the'metal purity changes the Magnetic'moment from 1.65 to 1.42, while the paramagnet i c Curie point-changes from-080"Ito'._700K. The Curie point was negative for all samples. it is possible,- therefore, that scandium' shows an antiferrite 'exc ange ow er, h interaction- H e4 thls'~requlres further testing at lower temperatures.- No investigations have-been re orted.on.the:.magnetic properties of monocrystalline P so since it.ls very difficult to obtain scandium single crystal e jo wa on e vacuume: ~In the Or sent work this sA e by r crystallization annealing in a high. :This,method results in,the -lowest quantity of admixtures. The sample of mono- crystalline scandium was.placed-in a holder-in such a way that the magnetic.field wa's directed either parallel o perpendicular to the c.axis. The.temperature r ~dependenca of magnetic susceptibility was-investigated in both of these directions.. -The tests,showed that,the-mmignetic,sus6e tibility wac higher in a parallel field P than in a,perpendicuiar field*, This,sh6ws that the magnetic moments~ are oriented- * t _C ' 1300K in the parallel magnetic field and aj,ong the c.axis... The urI6.poln was -900K in the perpendicularfielA. Similar relationships betweenthe Curie points of monocrystalline,and polycrystalline scandium were obtained with neodymium b Y D. R..Behrend, S. Le9vold and F. H. Spedding They also found that neodymium was antiferromaqnetic~at Io'w temperatures.-Orig: art. has: 3 figures and i table, Card 2/3~ PDP, IuliuL-Cq~I,Xovf- V.I. Pendulum type magnetic balance with mechanical compensation. Prib. i tekh. eksp. 9 no-5:180-182 S-0 164. (MIRA 17:12) 1. Fizicheskiy fakulltet Moskovskogo gosudarstvennogo universiteta. ACCESSION.MRs AP4034069 8/0126/64/017/04/b636/0638'~ AVMORSs Chechernikay, V* Iol Pop, Iuliu TITLEt Antikerracametism. in Ni-Cr alloy's SOURCEs Fizika metallov L metallovedenlyeg ve 179 no- 4. 19649 636-638 TOPIC TAGS: antiferromagnetimp nickel alloys chromium alloy, smanetio susceptibility# temperature dependence ~.,ABSTRACTs An wMerizental study was carried out an the temperature dependence of ~the paramagnetic susceptibility )C of Ni-Cr alloyaq which contained 3-4t 5-0t 8-75" 11.1 at. % of Cr (hereafter referred to an 19 29 39 and 4 respectively).. For cast samples the curves of IM as a function of temperature T for I and 2 increased linearly up to about 10OOK and satisfied the Curie-Weise'Aaw in the form x=. + i where W is the texperature-independent part of the sunceptibiliii k C -is the Curie-Veins oanstantq and 9 Is the taqwature of the paramagnetic Curie p P int. Curves for the cast.woples of 3 and 4 were definitely nonlinear 0 and. followed more closely the KAI law I I " T` For arnealod. Miles au rard 1A 'ACCESSION MRs AP4034069 the curves satisfied the 141 law for T above 500-650K. At lower temperatures the dependenoe of the eumooptibility on the magnetio field intensity predoninsIted, ,Ebtporimental values for the parameters occurring in the above equations are given ..for each curve. Neutron diffraction studies show tb&t for Ni-Cr alloys in this ,region of Cr conoentration the mastic moments of the chromium and nickel ALtoms are oriented antiparallel. Consequntlyp it is conoluded that strong antiferro- magnetio exchange Interactione wdst for this systems Orige arte base *2 oquationst -3 diagrams, and I toble. ASSOCIATIONs Moskovskly gosvidarobvenV*1 universitet Im. Lomomosovs, (Noioow State Phiver sity) 'SMKXT=s 20W3 IMCLS 00~1- CMER 110 3W BOVI 0014 Oln=$ /* 7 ft wYi w C S10126/64/018/0'33/0369/0367 C"ESSION .,NR, AP4046089 A P rniko AUTHOR. V, TITLE: Magneile pr'opertie~j Of-. gmolinitrio-cerlwi alloys SOURCE -I"zik no.. 3, ~1964 363-367 I a metallov- i rnetallo'Vedeniye, v. 18, TOPIC TAGS: xi~agni tic aE~,r~ "s gadolin'lum corlurn alloy, ~ij a-ra m a g z i e t i e rrvj-_~- r-y s' Curie Weiss, la'w -na ABSTRACT: - The authors haveylli vesitig'ated.the -maganetic prope rties~of effloys of 7-177 t Ic- gaaollnluln-~:Cerium tern:X Mtie Tcr~y"Illwe-st-m la-' on the relative a' uunts~of Gd'ainid Ce,:~andltheir magnetic propertle s could be- IM expected to vary accordingly. The magnetic suscqlib ility was inea-sured as a lunction of tem-perature u to 1000 X for alloy kvith Gd and Ce in various propor- tions. It appeav'S from the res -iffis that the -gllovs- Iwith more than 607o of gadolinitrn byweight. are in the ferro-anti- and paramagnetic statess. The rest of the alloys are anti-ferrornagne tic at lovi ternperatures, and at higher temperatures t`rtere is ' NIR RET SOV, 005 OTHER.006 ~ACUSSICK XR: A S/0O48/64/028A*"74kM7SQ CbedLeralkav, V.I.; ftp# Iullu '~TXTM magmetie properties of mom d and 9 imetals (single crystals and pDlycrysta ~Zffeport, Symposlum an Feravoegastlam and Ferroelectrielty hold In lonlegred 30 Ifty to 3 June M17 SOURM AN SSSR. Isv. S*r.fla.g v'*28g no*49 19640 746-750 ;'TOPIC TAGS:- magnetla susceptibility, temperatv" variation of susceptibility, Mg- netization isotherm , scandium, yttrLuap godollnium, d transition metal 0 9 trawl- tion metal !ABSTRACT: Where" the magnstle properties of scat trawltion d metals have by Mv I been thoroughly studied In a wide temperature range, little Is 1known regarding the !magnetic properties of metallIc scandlum and yttrlum, particularly In the torn of single crystals. This is due partly to the difficulties of preparing high purity Sc and Yt. Yet their properties are of particular Interest in view. cc the fact that: Sc and Yt have one uncompensated eloatrola spin is the 3d and U shells v respective-; ly. In the present work there vas determined the temperature depandeme ad the re- Cord AMWICK HS: AP40306W c1procal suseeptl1billty for several polyar3nitallbw specimens of scandim of diffe-, rent degrees of purity. The results are shows la the figure (Saclosare). However, primary attention van given to Investigation of the magnetic properties at Se am Tt single crystals. After conelderable experimentation, cubic crystals suitable for .measurement were finally prepared by the method of "recrystallIzational anneal" un-. der high vacuum. For susceptibility measurements these were mounted In the holder 'with the c axis either parallel or pexpe Icular to the field. It Vag found that is* go the susceptibility In Us parallel ;field is greater than In the perpendicular one; thei opposite is true for Tt. The temperature dependences of the reelprocal mum- ceptibility were obtained ffbatraot*rls note: no results are described only In vs- ry general termRg In view of the fact Ahat in Se and Tt, as Is many ram earth me- tals, there may obtain antiforromagontle exchange Interaction In a certala tempera;-- ture range. It was deemed of Interest to Investigate the magnetic ps opertles at ga-. dollulua; Wasurements of the nagnatIzatlon lseOmw were carried out on single crystals - (a a3ds pamllel and perpendicular to 09 field) and polycrystallime sea- ples :in the rafte from 17 to 1000OCe The sagastisation Isotherms am proseated in. figures* 7M brea3m evoiced In. 'Aw curves aro emktagous to tbase sapofted tar other ram sank messla Sa Wo r"Iss et wassamee st a belleass aga seaftgarasamt, to Amid" ACCESSION NR: AP4030656 is concluded on the basis of the experimental kesults obtained for Be, Yt and ad that a complex azktlferrGmgwtlG structure obtains In those wtals. Orig.art.han: :4 figures. 1ANOCIATICK: Moskovskly gesudarstrsaWy valversitet Oftscor Rtatis UUversity) :SUMTM: 00 DAIR Aft 3CApM 23=4 01 im cani: M MR w am$ 000 01MM 004 A 4 / ACMSXQN NRz U401921H 8/006/64/046/00~/0444/0446 AUTHDRSt Ch*chsz~hAXqv_#.. Ve X91 Popt lialiul Terekhova,-V. F.; Koleanichenkove, Ye. TITLE, Magnetic proporties of iingle-brystal and polycrystalline I- yttrium SOURCEs Z. hurnal sksper. L tisorl. fix-* V. no. 2s 1964, 444-446 i Topzc TAGes yttrLus, aLngle crystal y~triume polycrystallLne yttrL- um, 1 Curie reLss Xaw*. paroWnetic Curie temperature, magnitic sus-6 ceptibility, sunceptibUity-texperature dependonci, transition metal d band e1ectrqv%, a band electron A~WTRACN' The mWetLe suseeptibilLtyiof yttrium was studied for e of cbtaLnLnV now Lnfozmtion an the rol CM purpos e of d and a 'Aloctrons; in the mWeUe prap*#Lea of weakly magnetic transition metals -Tbs. 'temperatu;* 41spendincis of the magnetic susceptibility, A 4 ACCUSION MR: AP4019204 was Imeasured between 77 and.1004'Y. by t~* Sucksmith method. In the isinglercrysital yttrium the magnq~ic su0ceptibility was higher when measured at right angles to tbs',-j--axis,`than parallel to this axis. J,The tes"rature dependence of thi ouselptibility'is attributed to ,.the presence of collective-statiOlOctFOns of the d-s band and elec- ,.."trons of the d!-,bande subjected t~o spat4al localization. use of the C!2ri*-Weiss law yields for the paramagiketic curie p;oint values -510KO -330Xt a -396K* It is suggeste& P ep-L :P-Polyqro Vthat in view of the below-sero CIari;m t4pporature an antifer:Fomag "In conclusion, Inetic interaction may exist in netillic yttrium. i r P.the authors mTress theLr-gratitude to*Prof. Yo;. 1. Kondorskiy fo -.invaluable isparkse" Qrigo art. bass I figure and 3 formulas. ,.Aj;SOCIATIONs 'HoskovskLy qosudariitvenny,*y univ*rsitet (Koscow state University] 'OSMG3 Dwq) ACOS ;7Mar64 ENCL: 01 OUB. CODE v PH 90 BOVif',.002 OTHERs 04~- 0 P-A S/00s' 1ACCESSION NR: AP4031143 6/64/046/004/1226/12271 AUTHORS: Chechernikov, V. I.; Pop, Iuliu'" -TITLE: Magnetic properties of lutecium SOURCE: Zh. eksper. i.teor. fiz., v. 46, no. 4. 1964, 1226-1227 TOPIC TAGS: lutecium, magnetic susceptibility, paramagnetic Curie- temperature, Curie Weiss constant,.effective magnetic moment,'eloc_ ..tronic state density, electronic specific.:heat ABSTRACT: Continuing similar studies on scandium and yttrium (ZhETF v.-44, 387, 1963 and-v. 46, 444, 1964), the authors measured-, f6r the first time the t6Werature dependence of the magnetic sue- i. ceptibility of metallic lutecium in,the rang* from 77 to 1000K. Bother magnetic characteristics (effictive magnetic moment P , Curie- P !Weiss constAnt C~, ~nd..the paramagnotic,Curis twperature.'O were P 142 I :;on the cohcentration.and magn6tic*field.intensity. The temperature the paramagnetic'susceptibility of Gd-Er alloys was -investigated.to detei-mine:the effective magnetic mome nd also nt a the paramagnetic,Curie point. 'The magnetic moments of the Gd-Er alloys increase fr - 0 .for pure Gd to 9.52 Bohr. om 7.95 Bohr magnet ns magnetons for Er. The paramaghetic.-Curie point shifts to lower., temeratures when the erbium content is increased but remains posi- tive*.at all erbium ntrations. It d that the.de-I conce is conclude penderice -69--the maghe ti:es-.-of --these -alloys- on the-tempera----------- tic- roper Cord 2/3 L12?m-66 EWT (M)/EWP (W)/ETC (F)/tWG (a)/T/EWP (t)/W (b) IJP(c) RDW/JD/JG ACC NR- AP6001230 SOURCE CODE: UR/0363/65/001/012/2138/2139 AUTHOR: Chechernikov,, V, 1, ; Pedwnpikov, A. V. , YareMbash, Ye. 1. ; Kalitin, V. mow ORG- Moscow State. Univeisi!j Im. -N. V. Lomonosov (Moskovskly gosudarstve .nnyy univers- Itet); Institute of General and Inorganic Chemistry I N. S. Kurnakov, Academy of Sciences,, SSSR (Instifut obshcRy-i neorganicbeakoy khImil Akademit nauk SSSR) 7 TITLE.- Magnetic propertAeo of praaeodymium selenides SOURCt-. AN SSSR. Izvestlya. Neorgntcheak6 materialy, v. 1, no. 12, 1965, 2138-2139 TOPIC TAGS: praseodymium compound selenide magnetic moment, magnetic susceptibility Cvrie point ABSTRACT: Vie magnetic r. ea. of the selenides PrSe, Pr SeV Pr-,Se.., and PrSe7 were studied. The magnetic susceptibility was measured in the 80 - 900K range. Above room -4 temperature, the measurements. were made In A. 10 .. mm Hg vacuum to prevent oxidation. 'Fig. I sbows the reciprocal magnetic susceptibility versus. temperature. The Curie-Weiss law X = C/(T - go was obeyed by all the samples. If the paramagnetic Curie point 0 Is determined from the experimental data, and the effective atomic magnetic moment R is then calculated, it Is found that these values change in proportion to the praseodymium, 4t;nt. The magnetic moments correspond to the magnetic moment of Pt+ ion, Le. , 3.;3~,6. The Curie point 9 Is positive in Pr 41 Pr2 Se3, and PrSe7s and negative in PrSe and 13rSe.; this is due to the RY;Darance of anwrromapetic interaction in the latter two compounds. It is rd 1/2 UDQ 546.6661231:538.11 card 2/2 39712-65," ACCESSION NR. AP500613 ENCLOSURE:. 01 Inverse~-sus 1 Fi ., g. 2 25 5 ceptibilit y.,as a function of tempera erbium (I turefor and alloys.. 2 3--3.96; 4-9.81; -at 6 T 5- 61V M "/I ;,L 1358-66 EWT( WPCw)LEY4(g) WPZb) 1JP (c) AVE "ACCESSION ME: APS021942 UR/0126/65/020/002/029910301 546.65~:538.214 erekhova AUTHM. arnikov, Mach V.~.; Spsianski-Y. N.M NaRj2v ~-1:, TITLZ*. Magnetic proElrtie f Imn-naodaigg alloya - SOURCI; Fialks, ustallov I UstallavedenLys v# 20, n0s 2, 1965, 299-301 ~j alloy, neodymium containing alloy,-sagnetic propertie TOPIC UGS: iron containing. .."z constitution diagram, ferromagnetic region, paramagnetic region, Curie point, anti- tic interaction, three sublattice structure nape ABSUACT: Pure carbbny iron (99.9%) and neodymium metal (99.5%) vere smelted to- gather in an arc furnace with anonconsumable tungsten electrode in a purified -400 helium atmosphere under a prQs*ure of 300 mm Hg. The resulting alloys contain' i different proportions of To to Nd were remelted several times to assure homo-~~ seneity and annealed in evacuated quartz.ampoules at 600 and 900*C for 130 hr. Subsequent microstructural and,l-ray onalyses of the sphere- and rod-shaped speci-i' Sens showed that most of the obtained alloys are of two-phase kind and represent mechanical uixtur*a of solid soliltione (based an pure components) with chemical compounds .(Fel7N2"and re2") Such 6: type of constitution diagram largely deter- rd 1/1 L 1354-66 ACCESSION NIL: AP5021942. pa anagnatic properties were nves- sines the magnetic pro rties,of these alloys. Th i tigated with the aid of the magnetic scale described.by V. L Chechernikov (Vestnik 7 4 WA far., fiz., 1937 no- 1, 47),- at first ia' the ferromagnetic region. It turned out that in alloys containing from 10. 52 to 85 at.% Nd, below the ferromagnetic Curie point Of there exists a temperature range in which magnetization decreases to The 4 a minimum whereupon it again rises, and then againdrops to zero at T - ef* t investigations were also carried out in the paramagnetic region, where they made i possible to calculate the effective magnetic moment P and the temperature of the paramagnetic Curie point. The temperature range of Avestigations in both the fer- romagnetic and the paramagnetic regions was.300-13000K. It is.concluded from the -Nd-allay,system there. *exists, alongwith-the ferromagnetic findings-that in the Te rramapat c- taraction~ case A 80-. AS i icb- W~: t: clearly.manifes ad a ihs: o the -on* 7 Vd__ -:As- f :experiments revealed, in: the regi - f -P on f Mee compour e17 existence of this compound the magnetic moment of alloy reaches a minimum. and the paramagnetic Curie point is much lower than in pure iron. It is possible that a three-sublattice structure exists in the Fe-Nd system, with positive interaction .,Iexisting between homogeneous atoms and negative interaction between the atoms of Fe and.Nd. The magnetization of Fe-Nd alloys*throughout the temperature range-inves- Itigated is conditioned by the Fe atoms; it is-not completely compensated, since the ~Uapetic soment of. the Fe etooftesede that ot the. NO atwo: "In conclusion tim Caid. 2/3 L 1718-66 EWT(m)/EWP(t)/~WP(b) IJP(c) JDA ACCESSION NR: AP5021943 UR/0126/65/020/002/0302/0303 539.292; 538 A 91 AUTHOR: Cheche rnikov, V. 1.*,-Nefedov, A. P.; Sokolovskaya, Ye M,. TITLE: Magnetic properties of V-Ta alloys ~T7 SOURCE:. Fizika setallovi metallovedeniye, v. 20, no. 2, 1965, 302-303 .~TOPIC TAGS., magnetic susceptibility, vanadium containing alloy, tantalum con- taining alloy, homogenized alloys electron system) sigma phase ABSTRACT: The authors present.the results of an investigation of~the, temperature dependence of the magnetic suacep;4bility of V-Ta alloys made of 99.63% pure '4 vajaadium ano/199.7% pure tantalumilli4ong with small percentages of Fe, Al. Si, N2, C, 02s no Tit W, and Mo. Physicochemical investigations of the annealed ape- cimene (inicrostructuralexamination, determination of electrical resistivity, X-ray structural analysis) revealed that the -homogenized- alloys form monophase systems, while alloys subjected to additional annealing are two-phase. The mag.; netic'susceptibility of the alloys was ne'asured at temperatures of from 77 to' lloO*K with the aid of A pendulum balanco. It was found that at room temperature 1/4 Card - --------- L 1718-66 ACCESSIOWNR: AP5021943, the susceptibility,of the hoviogenized alloys varies smootbly thr3ughout the range of concentrations. For pure vanadium it is maximal (4,10-0 g-cm- ), and it de- creases with increasing Ta contentuntil, in the case.of pure Ta, it drops to 0.95.10-6 9. -3 cm . At different temperatures,_ throughout the entire temperature range investigated,-for.homogenized alloys, the temperature dependence of.specific susceptibility 1/X is linear (Fig. 2). The slope of the curved, which is nearly independent of alloy composition, indicates a certain localization of d-electrons in the alloys,investigated. The imost interesting results were obtained-for alloys containing 34 at.% Ta (curves 6, 7).Thus while the susceptibility of a specimen subjected to a single heat-treatment operation varies markedly with temperatures the susceptibility of the compound TaV2 Is nearly independent of T (curve 7). This indicates that, in this compound, the principal part of the d-ele.6trons undergoes a considerable collectivization, forming together with a-electrons a common elec- tron system. It is this electron system that largely determines the magnetic properties of the compound TaV2- It may :be assumed that thio'compound is an. CF-phasev whichl' as is known, exists in many vanadium alloys and is-by nature an electron compoundo Furthermore, these findings confirm the phase diagram obtained by Refedov at &I* (Zhurnal neorg. khtaiip 1964p 9p 4p 883), Orig. art* has% 2 figures* Cewd-Alk- JVIJU -A_ffUTff:_ AP5027907 SOURCE CODE: UR/0189/65/000/00,r,/0042/0047 7=-Z Z---- AUTHOR: Nefedov, A. _E; s4WOLy- at Ye.'M.; Grigorlie A. T Cher. --Sokolova,.~- G4; Guzey, I., ORG: Moscow State Unf~ersity (Moskovskiy gosudarstvennyy universitet) 75 TITLE: Solid-state phase transformations in vanadium-tantalum alloys _64-/ SOURCE- Moscow, Universitet. Vestm'k. Seriya H. Xhimiya, no. 5, 1965, 42-47 TOPIC TAGS; base transition, vanadium alloy, tantalum alloy* vanadium compound, p tantalum compound ABSTRACT: The paper is devoted to the determin mnature of the. intermediate -Touf.P V~ phase of TaV and boundarieW of its existence in V- a ste . The magnetic 2 susceptibili* was measured as a function of composition and temperature. The temperatures of the start of fusion (solidus temperatures) were determined. Data were obtained on the differential thermal analysis of alloys of the V-Ta system, and on the microstructure, hardness, and crystal structure. The results were used to plot a phase diagram of the system (see Fig. 1/2 UDC: 536.7. Card 1: _7_932m66_ 7 ACC, NR, AP5021907 It is found that in the region of the stoichlometrid composition where the ratio of the components (at. %) V ! Ta--- 2 ! 1, prolonged .2AZ - stepwise annealing (lasting over 1600 hr) induce s transformations which may be regarded ~as a Process of ordering with the formation of the Intermetallio compound TaV . X-ray analysis 2&V - showed that TaV has a hQ~nal structure I&V similar to that o? an MgZn -type Laves phase, a to.,a) 058 0. 005 and lattice parameters a - A; fW0 M 0 00 G~ a a c = 8.250 � 0.005 A; c/a = 1. 631, with four 1 9 00 0 0*000' ato Vormula units per unif'de-H. Orig. art. has: T 7 figures ind 3 tables. j ~ M4d 0 60 0, - 79 AV A9 W .59W &V M 109' Pig. 1 Phase diagram'of the,V-Ta system based on data of this, study SUB CODE: TvIM'SS SUBM DATE. 07Jan65 /'O'RIG REF: 005 OTH REF: 002 2/2 , C,,d L jUP(Z)/EWT(2)/fWP(b)/AWP(0 IMP) JD/Z4/JG/)UVt4) ACC MR: AP5018871 SOURCE CODE: UR/0126/65/020/001/0157/0159 AUTHOR: ChechernjjMy,,V,.I.; SjLeranskiy, N. M.; Terekbova, v. r., Rozhkova, R. S. ORG:.,Moscow State University im. M. V. Lomonosova (Moskovskiy gosuniversitet) 167 TITLE: Several magnetic properties of Ni-Eu alloys SOURCE: rizika metallov i metallove3eniye, v. 20, no. 1, 1965, 157-159 TOPIC TAGS: Europium compounds nickel containing alloy, magnetic property, paramag- netic susceptibility ABSTRACT: Temperature-de3endence (300-10000C) of paramagnetic susceptibility-using ~the Faraday method at 10- to .10-4 m-m Hg was studied for specimens contaiping 0.77, .2.0, 31.26, 3.6 and 6.38% Eu. Samples of electrolytic Ni of 99.9% PuritylAnd Eu not containing more than .2% total impurities were castand remelted under 15 atm of helium 3-4 times in a tungsten-are furnace and then homogenized for 100 hrs at 11000C. Microstructural examination showed the presence of a eutectic Mi(a) + ,Nil7EU2, which increased with increasing Eu. The eutectic transformation tempera ,ture was-1190 1010C. The solubility of Eu in Ni does not exceed 0.77% atA Eu. Qrd UDC: 546.661 538.214 ACC NR: AP5018871 'The compound Eu Ni (Th7Ni '10 was indexed at c/a 0.968 giving lattice 17 tYr, A =T31Tand c~=,8.09 and intensiiy measurements indicate an hexago-~ nal structure. The hardness of the~compound was 271 kg/mm2 as compared with 70 kg/RM12 for pure Ni. The'variation of the reciprocal of the susceptibility I/X with~ ;temperature is shown in fig, 1. The Curie-Weiss equation gives the susceptibility ~where ~k is the,temperature insensitive susceptibility.~ The susceptibility of Ni 16.38% Eujs almost an order of magnitude greater than'for pure nickel. The magnetic !moment RR is almost independent of the composition a small increase in ~R takes !place at 6.38% Eu., The paramagnetic'Curie point OR drops initially with increasing~ :Eu and then from 3.0 to 6.38%,Eu* remains constant. Orig. art. has: I figure and 1' i formula. ~ISUB CODE: MNI SUBM DATE: 240ct64/ ORIG,REr: 000/ OTH REF: 000 Card 2/3 -.kCP7k,-66Ai - - - 5018871 Fig.l. Dependence of 1/~ on T for j A specimens with varying.Eu content. j 1 Ni; 2 - 0.77; 3 - 2.0; 4 - 3.2 at. (upper temperwture scale); 5 - 3.6; 10 - 6 6.8 at. % (lower temperature scale). Lower right shows the depend--~ ence of RR and OR on Eu content. 8 6 . ~Pl .300 200 100 Ivi 104P .600, ew /Xv. 1200 JOV YOL~ WO Cara 3/3 CICE CIERNIMAT , V. !. ; SPEWANSKIY, IN.11 1,1--*,-l;l,'c)V.! , E.V. Magnetic rzoperties of. iron-neodymium alloys. Fiz.,met.i n, etalloved. 20 no.2:290,-301 Ag 165. 18:9) 1. Moskovskiy gosuda--stvenyW universitet imeni 14.~.Lcrmonosova, CIECHERNILKOV, V.I.; NEFEDOV, A.P.; SOKOLOVSKAYA, Ye.14. ,~ Mgnetio properties of V-Ta.a-lloys. FJz.metoi metalloved. 20 no.29302-~.303 Ag 165. (MIRA 18:9) 1. Moskovskiy gosudarstvemyy -universitet imeni M.V.Lomonosova. CHECHERNIKOV. V.I.; PECHENNIKOV, A.V.; YAREMBASH, Ye.I.; KALITIN, V.I. Magnetic properties of prasoodymium selenides. Izv. AN SSSR. Neorg. mat. I no.12:2138-2139 D 165. (MIPA 18:12) 1. Moskovskiy gosudarstvennyy universitet i Institut obahchey i neorganicheskoy khimii im. N.S. Kurn"ova, AN SSSR. Submitted July 12, 1965. BALANEVSKAYA, A.E.; BERGER, L.I.; PECHENNIKOV, A.V.; CHECHERNIKOV, V.I. Magnetic propertieg of a series of ternary semiconductor compounds of the A'B-T' CyTtype with chal.copy-rite structure. Izv. AN SSSR. Neorg. mat.j no.12:2165-2166 D 165. (MIRA l8sl2) 1. VoesoyuzM7 nauchno-issie6ovatellskiy institut khimicheakikh reaktivov i osobo chis 4khimicheskikh veshchestv. Submitted July S. 1965. WMDOV, A.P.; SOKOLOVSKAU, Ye.M.; GRIGORIYEV, A.T.; , I . SOKOLOVA I.G.; GUZEY, L.S. Fll,- . _- I p ~~ -2 ~ _~ - CHECHERNIKOV, V.I.; SPERANSKIY, N.M.; WiLYSHEV, Nel. Electric, thermal and some mapetic properties of nickel- cadmium ferrites. Vast. Mosk. un. Ser. 3: Fiz., astron. 20 no.5:45-48 S-0 165. (MIRA 18.U) 1. Kafedra magnatizaa Moskovskogo universiteta. Submitted Vay .128 1964. CHEqEWL(3y,_j.I.; PECHENNIKOV, A.V. :; KALITIN, V.I.; YAREMMSH, Ye.I. Magnetic properties of single and polycrystalline praseodymium diselenide PrGe2. Zhur.eksp. i teor.fiz. 49 no.5%1399-1401 N 165. (MIRA 19g1) 1. Moskovskiy gosudarstvennyy universitet. - 0121 rd-'w P-01'i4:'--L"('U0UU'QE"UUU' ~~v I-- - __ . -1 - - - -1 UUVI vv i J.'r vv -.0 1 AUTHORS: Chochornilwy.-j"..; Spqranskiy_,__Y~_4__;. .ORG: none TITLE: klagnetic.~ thermal, and electrical_p?~_qpq_*ies of nickel-cadmium ferrites SOURCE: Vsesoyuznoye soveshchaniye po ferritam. hth, 11-11insk. Fizichesk .iye i fizikok1iimichovkiyo svoystva. ferritov (Physical and physicochovacal properties of forritas); doklady sovoshchaniybL. 111insk, Nauka i takhnika, 1966, '11-75 -TOPIC TAGS: ferrite, electric resistance, magnetic susceptibility, heat conductivity~ nickel compound., cadmium. compound JkBSTIZACT: Specific electrical resistance, heat conductivity, and mgnotic 3uscepti- bility of nickal-cadmium forrites have been studied as functions of tomorature within a temperature range up ti OC. The chemical comoosition of the specimens is listed ip Table 1 Uhemical 5nalys S,k specim F'.0' Nio rajo 1 6.1.2 '24 4 10.11 2 63.4 20:8 15,3 3 61.8 17.5 20.7 4 61.4 14.3 , 5.4 1 XT Card 1/3 ~.6 55,4 T 'I f%74). A7 ACC NR- AT6028976 At these conditions it is possible to observe the variations of physical properties in ferrites changing from a normal spinal structure to mixed and reversed structure. The effect of temperature upon the heat conductivity ~ and upon specific electrical conductivity (D of various compositions ol this ferrite system is illustrated in Figs. 1 and 2. A definite correlation was established between the .3 c al jjcj A x 1-2 3`3 5 6 Fig. 2. In. oe' for Ni-Cd forrites as 5 1 a function of W C (500 Table for 30 jig 500, ZO composition) Fig. 1. GoefAcient of thermal conductivity for Ni-Cd forritea as a function of temperature (zoo Table Xor composition) Card 0 IACC. NR. ATI"026976' invostigated proportios, especially a regularity botwoon the ILemporature and composition of the ferrite, on one hand, and the specific eloctvrical resistivity and heat conductivity, on the other. The obtained data indicate thatt, the decisive role in determining these properties is played by the electrons located in apices of tho crystal lattice. Orig. art. has: I table and 4 figures. SUB CODE: 3.1,* 20/ SUM DATEs 22Dec65/ ORIG REF.- 003 -1-:07113-67 EWT (1) W/EOPWAti iip(c) AP6029107 SOURCE CODIt UR/0048/66/030/006/0937/0961 ZhdazWVqGqG.-. lbralnov,XIe131i3[3&x Inin,R.H,; Chechernikov.Y.1 ORO: Physics Department# Moscow State University Ims RV'1Am*nosov(F1x1Ch"k1y fiiillltet Moskovskol gosudaretvannogo universitsta) TIM: The Mossbauer effect In the IntermstallIc compounds Coll ASn mW N13L 48A Isepo" All-Mion Co ~er*w~eoh~e Physics of Ferro-and Ant1terroffilwatims held 2-f July I In Sverdlovsk7 z SOURCE: AN SSSR, Izvestlyse Seriya fixlch*skaya, v, 30, no. 8~ 1969, 957-961 'TOPIC TAGS: Mossbamer spectrus, Wasbauer effect, magnetic susceptibility, cobalt allay, nickel allcy-,$ntermeta~41c cowpound ABSTRACr:,Jhe present study.was undertaken In conjunction with the growing Interest In In IntermetallIc compounds, in particular those can- taw- W&~%W,"'-Speciflcally, there was studied the Mossbauer effect In C0l.4Sn d 11,48n. The compound specimens me" prepared by vacuum melting of the components, followed by homogenizing anneal In sealed tubes (30 hours at about 8000W.- and then slow cooling to room temperature, In the some manner there were prepared spe I xtures of the two above-wentioned compounds* I.ee, representatives Of C the CT0?x3f?-rYstez6 Am" the last only samples with the NOW stmoture wpil 1002190t4k for iie-iois-t or The Mossbauer effect was'studled on a 2=261 1/2 L 07113-67 ACC NRi AP6029107 In specimens with 1."timr thickness of 9 mg/cmi2.~ The source of the 2398 k~V gamme rays was a 5 mg/ca thick sample of Wgion. The measurements were performied -with the source at liquid nitrogen t*mperatur*e The Mossbauer spectra obtained for Co On at f l Bn different temperatures of the absorber and for a series o 00 .4 -N13L.48n 90111 solutions (0,9,25,50 and 100% C01.48n) are reproduced In figures. Also presented In graphics are the temperature dependences of the reclprocal.musceptibility as obtained by the authors and taken from the literature (M*Asanum, J.1ftys.Japan, 17, 300, 2962); the agreement for C02.48n Is better than for Nil 48n. The temperature variation of shows that quadrupole spliHing persists up to the taimperature the Mossbauer spectra Of the phase transition, that is, up to the temperature of the Nook In the reciprocal susceptibility versus temperature curve; above the transition point there 10 obsox. only the sInglet Mosobsuer line. The results are discuss" briefly and reasoWwn hypothesized for the absence of ferromagnetIms In the studied Intermetall1c compowedso Further investigations must-be weft before a full Interpretation of the prebefit re- sults can be offerode Orig, art, has: 4 figures. 80 CGDZz 20#07 amt 00 Ono, am: 005 am RMS 006 LC T, 01052-61 EW (m)AA-dP(t)ATt IJP(c)- JD ACC -144, -AP6030956 SOURCE CODE- UR/0181/66/008/009/2594/2597 AUTHOR: Ka shlinskiy A. I.; Chechernikoir s V. 1. Venevtsev, Yu. N. ORG: Moscow State Universi!Z im. M. V. Lomonosov (Moskovskiy gosudarstvennyy universitet) TITLE: Investigation ofelectron resonance and magnetic properties in solid solutions f the system SOURCE: Fizika tverdogo tela, v. 8, no. 9, 1966, 2594-2597 TOPIC TAGS: electron spin resonance, electron spectrum, EPR spectrum, solid solution, bismuth ferrate, barium titanate ABSTRACT: The spectra of electronic resonance in solid solutions of the i5ystem bismuth ferrate barium titanate have been investigated. The clearly defined anomalies in the spectra are determined, corresponding to the d.jelectric and magnetic transitions in solid solutions in conformity with tetragonal and rhombo' - hedral modifications. The data on changes in the EPR spectra are analyzied in 'k.~ relation to the properties of solid solutions under study. Orig. art. has: 2 figures. [Based on authors' abstract] INTI SUB CODE:. 20/ SUBM DATE: 14Jan66/ ORIG REF: 0091 ,-LCard 1/1 ACC Nit, AP601690 AUTHORsl Chechwakova V. I.1 FecherAdkovs As Ve; luliu POP ORG: Moscow State University In He Ve Lowncew (Kos1wvs1dr gosuniveraltst) TITLE: Magnetic properties of cerium-acwWdim alloys 14. SOME: Fizika metallov I metallovedenlysp v;*-1.' no* 6# 19669 937-939 TOPIC TAGS: magnetic alloyp magnetic susceptibility, cerium bass alloy, scandiUll ferromagnetism, antiferromagnotim ABSTRACT: The magnetic susceptibilities of seven cerium-acandium alloys are investigated as functions of tempersturee The subject in of interest as it was noticed earlier by Vo I. Chechernikov and Iullu Pop (FM., 1964v 18t 363) thatp at certain temperaturesp cerium alloys exhibit coex1st*nc* of ferro- as wall as antifarromagnetism. The temperature interval chosen for the study was 77 to 1100K 'which Includes the region of polymorphic transformation. Before measurements were taken., the alloys were annealed at %W for 240 hours* The magnetic susceptibility was measured by balanced s"les with mechudcal compensation described by luliu Poyr.~- - and,V. I. Checherakor (PTZ,, 196kp moo 5j, 180)o' The results of the investigation are shown in Fig. 1, Apparentlys, tbs magnstlo properties of alloys with high UDGa 538.224A.65+546AU ACC NRt AF60189$0 7 1 Fig. I I/A an function of T for C94c alloys a I - 9j - 2 41 3 - 411 i 4 491 65j., 6 - 60;. 7 90 ate % I -;f Saj raudader consists of Goo: e 4L V~. -j- r cerium content are determined by localized 4f electrons* 'Orig. arta. Wwt'2 fipres* SUB CCIDEs 31,2.0/SUBK DATICit MecW QUO MWz' 003 Cwd 212 ACC NR: AP7002734 (A) SOURCE CODE: UR/0126/66/022/oo6/c,839/0842 I AUTHOR: Shafigullina, G. A.; Chechernikov, V. L; Markova, L A. ---------- ORG: Moscow Stat University im. M. V. Lomonosov (Moskovskiy gosuniversitot) il T1TLE: Magnetic properties of Dy-Y alloys SOURCE: Fizika metallov i metallovedenlye, v. 22, no. 6, 1966, 839-842 TOPIC TAGS: dyskosium compound, yttrium compound, magnetic property, magnetic susceptibility. Curie point, magnetic moment ABSTRACT: The article presents the results of an experimental investigation of magnetic properties of Dy-Y alloys throughout the range of concentrafions in the temperature interval of from 100 to 1000% in the presence of magnetic fields of various intensity. To this end, 9 alloys of this system, containing 5.7, 11.9, 18.7, 26.6, 35, 44.1, 55.8, 68 and 83 at.% Dy (with '~f as the remainder) were obtained by multiple remelting in a helium-aftnosphere are furnace and vacuum annealing at 10-6 mm Hg for 70 hr at 850*C. Magnetic susceptibility was measured, pe- by the conventional ponderomotive method on using a magnetic balance. Heating to high tem ratures was accomplished with the aid of a platinum resistance furnace, and the temperature 1/6 UDQ 669.85186:538.214 ACC NRs AP7002734 was measured by means of precalibrated Pt-PtIth and Cu-constantan thermocouples. The quartz cup containingthe specimen and the thermocouple junction were in a uniform, tempera- ture field. The magnetic balance was calibrated in advance with respect fo pure holmium, Qor < 70VX) and nickel (for 700-UOO-A). Findings: magnetic susceptibility x and crystal lattice constants a and c change monotonicaUy over the entire concentration range (Fig. 1). The pat- tern of temperature dependence of reverse susceptibility I/X is linear. (Figs. 2. 3) thus makir IA, X./D# t Fig. 1. Magnetic susceptibility y. (curie 1) t and lattice constants a (curve 2% 3 and c (curve 3) as functions of z composition of the Dy-Y all(iy a~t room temperahwe L UD j0 Y, 'at.% j Card 2/6 ACC NR' AP7002734 x 12 6 S 6' .2 2- !00.470 M 4100 TOO tOO 700 $00 OO/W49/we w Fig. 2. Temperature dependence of reverse Fig. 3. Temperature dependence of re- susceptibility of Dy-Y alloys: verse susceptibility of Dy-Y 1- 5.7 at.%Dy; 2 - U.9 &L%Dy; 3 -18.7 auoys: at. % Dy; 4 - 26. 6 at. % Dy; 5 -36 at. % Dy. 1 - 44.8 at.% Dy; 2 - 68 at.% Dy; 3 - (RenOdWer: Y) 83 at. % Dy (Remainder; Y) Card ACC NR. AP7002734 it possible to calculate the effective atomic magnetic moment p of the alloys as well as to,de- termine, the Curie point 0P (F%. 4). Within the Oestigated temperature range, !AID Fig. 4. Effective atomic magnetic moment pp and paracutgaetic Curie point ep as functions of alloy composition Dy, at. % the magnetic susce ptibility of Dy-Y alloys follows the Curie-Weiss law. and 8 of the a] Pp p Card 4/6 ACC NR: AP700273-1- - vary monotonically As a function of the alloy composition, and the magnetic moment calculated 1 per atom 6f dysprosium corr~esponds to the trivalent ion of this element in fundamental state. In the low tcmperat~re range there occurs a transtion from antiferromagnetic to paramagnetic 1 state, which shifts in the direction of low temperatures with increase in 'the magnetic field' I intensity (Fig. 5). k1 this indicates that the magnetic properties of DrY alloyii are chiefly 2 2S Fig. 5. Temperature dependence of suscep- tibility of alloy no. 9 (83 at. % Dy, remainder Y) as a function of magne-, tic field intensity H: I - 17, 400 oe; 2 - 16, 100 oe; 3 - 14, 600 oe;1 4 - 12,440 oe; 5 - 10,050 oe; 6 - 7550 oe OA' ...... j 00 ja 24 ACC NR: AP7002734 conditioned by localized 4f-electrons, while In the antiferromagnetism region there apparently exists a spiral-Me magnetic structure resembling the structure observed for pure dysprosilimi "In conclusion the authors wish to express their gratitude to Professor Ye. L Xondorskiy for his valuable commeAU. 11 Orig. art. has:- 5 figures. SUB CODE: 11, 20/~ SUBM DAT.E; 29Mar66/ OTH REF: 004 Cwd Y6 TMTKOVA. A.F., inzhoner; CENCHMIAU, M.N.. inshoner. Good results from the u:=90f =00as ~W, bout shuttles for flax weaving* 'Poksteprom. 17 no.2:34-35 7 157. (Km 10:2) 1. Gosudarstvemiyy prMktoly inatitut-1. (Loans) Oplax) - --- ------ C=HgRsyliy Alekiaz~r Isayevich; FILOOT, N.P., red.: KOHYASKINA, A.D., telchnred. [How to prevent fire& in the how] Yak uberech' Shilishche ot poshare. Moskva, Isd-vo H-va ko=un. khoseRSMO 1957. 32 p. (MIRA 110) (Dwellings-4ires and fire prevention) D.M., inzh.,- ZBOSKIY, S.G., inzh.; CHERNETSKIY,, V.1),, irzh.- CHECHFARSKIY,', SOWIMP ltvyc,.p Complex lnocul&nt for iaatit iron. Mushinostroenle no.3., 2 ,z -6 (MM 18 6) my-js 165. GORBU(N.B.P.; CHICHN'T.z. Calculating the backwater of ground water under conditions of Intensive evaporation. Trudy Inst.soor.Al Ux.SSR no-5:91-96 154. WRIL 8: 10) (Soviet Central Asla-Vater, Underground) CHECHET.-Yu.S., dolctor tekhn. nauk, prof. (dec.eased); LOPUKHINA, Ye.M., Acihd. tekhn. nauk, doteent Optimum parameters of motors with no.39:55-59 162. hol Trudy MEI (MIRA 17:6) C,jjFCJJ-n~-1) jqr~V_.o, I 1 0) A. a __grggypVj#.., prof.( 894- 9( ',- TITUNIN, e. Y ., red. (Miniature electrical irachines of automatic sYs-Lems] Elektri.cheskie mikromashiTly avtomaticheskikh ustrolstv. lzd.2., ispr. Mosk-vaj Energiia, 1964. 423 p. (',LIRA KOSTENKO, Mikhail Poliyevktovich, akademik, PIOTROVSKIY, Lyudvik Marlyanovich; CRECIIET Yu j,., r . Rof.j retsenzent; USSERY A.s.- 12~ff, ~Le-'11~"Off'nauk, red, t VOLIDEK, A.I., doktor tekhn. naukp red.; PRUSS-ZhUKOVSKIY, V.V., nauchn. red.; ALEKSBYEVA, Ye.A., red. [Electrical machinery]*- Elektricheskie mashirq. Izd.2., Moskva, Ener.-iia. Pt.l. 1964. 547 p. (1,.IRA 18:1) ACC NR& AM5010318 MCUDGWII UR bechets Turly Sergey c Professor; Doctor of Technical Sciences; Deceased) Electric micromotory of automatic devices (Elektrichookiya mikromashiny avtomat- icheskikh ustroystv) 2d od.p rev. Moscow# Izd-vo "Enorgiya"# 1964. 423 p. illus.p biblio. 25#000 copies printed. TOPIC TAGSs automation# synchronous communicationp servomotor# tachometer# trans- former# computer technologro computer componentp automatic control. ou&rroror- ^",vroz PURPOSS AND COVERAGEs This book describbe the basic types of micromotorep Including serromotorep tachometer generatorop rotary transformers# and synchronously operating machines# for automatic devices. It also liescribee the theory and application of .micromotors in automatic control pysteSSA~\The book is intended as a textbook for students in elictrJkal engineering and power engineering universitiesp as well. an a *cool for engineers and technicians working in the field of autonations talemechanical jind computing technoloj6,. The author thanks N. A. laylinskiy for his valuable (W CWTENTS [abridged)i TU. S. Chechut, [G. N. Petrov, Professor, Corresp6nding Member MSW] - 5 Foreword - - 7 Introduction - - 9 UDGs 621.313.3s6a.313.2 rd 113 CH 57 ACC NRs AM5010318 PAN 1. Servomotors Ch. I. General theory of a-c motors for servosystens - - 14 Ch. 11. Theory of "ideal" induction motors used in servosystems - - 59 dh. III. Theory of a real motor' with amplitude and phase control - - 73 Oh. IV. Theory of a motor with a capacitor In the mitinj circuit. Comparison of various control methods - - 115 Ch. V. Direct-current servomotors - - 138 .Ch. VI. Electromechanical time constant of servomotors - - 157 PAW 2. Tachometer generators Ch. VIL Alternating-current tachometer generators 164 lCh. VIII. Direct-current tachometer generators - - 189 PAff 3. Rot,az7 transformers Ch. IX. Design of rotary transformerss, their use and working prinaiplq 298 Ch.-I. Theoz7 of rotar7 transformers with four windings - - 215 Ch. 11. High-precision windings for rotary transformers - - 254 PAFG 4. Idaromotors for synchronously operating eyetems Ch.,XII. Sinchranous. motors - -i.292