SCIENTIFIC ABSTRACT SINYAKOV, V.I. - SINYAKOVA, S.I.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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Ublk.)Wtua 'SO-.-WM- U(IMI).-Typical '-coIlOMOCPtUC-- reniform or tnulthyei%rhythink-, hIghl( finL-,cryst. agtrL- gates are Commonly dcscribcd as Wag ormcd by pptn. r--- actions fr6tn aq. solus. Absolutely identical aggregations;, however., may also om-ur from heterogeneous Cus reactions. with volatile reageritt. S. describes the volatilization of riac to Oe wmte gases, of a blast furnace from which, In the upper zqnes zincite Is deposited at temps. of the gascs below 300* and down to 33400', in fin"ryst. wall deposits of typical '-cnjInm(]rphoUS,* rtruct~res. 'Parillcl to the ps current the Z Of arranged In clougated aggregates which. however, in a oss section show a beautifully developed c-3nctntric- rhythfule festoon-like lay" structure. The polished and etchco sections (etchi.-d with coued. IICI for I min.) show the inarks at "cGlIamorph!c" depositloi. The analysis Show's 78-98"76 ZnO. 1.1-1.2% Zq, and other accessories (chi y coke fragments, magnetite), among whfcfx FeO r1mlach 7%. Hardness 4 W4.5; d. 4.7. The reffecOon power of the zincJte to somewhat: tower than that of mrtguz-. x VMVM-- - -. - - - - .." -. tite. The -my dhi is Kentieml With7viruite-frunt- Franklia Furnace; U.J. Andogous T or* are not known in nature. X SINYAKOV, V.I. Angular unconformity in Ordovician deposits of Gornaya Shoriya. Izv. Sib. otd. AN SSSR no..3.C19-2.5 '58. (MIRA 11:9) l.Sibirskiy metallurgicheskiy institut. (Gornayn Shoriya--Geology) Geology and mineral composition of ores of the Lespromkboz deposit In Gornaya Shoriya. Geol.rud.mestorozh. no.4:37-53 Jl-,Ag ? 611. OURA 1440 1. Sibirskiy metallurgicheskiy institut., Stalinsk, (Gornaya Shoriya-Ore deposits) .i. .-SINYAKOV, V.I.; CHIGHKOVA, T.A. Large plate of native copper from Gornaya Shoriya. Zap.Vses.min. ob-va 90 no.3.-282-283 161. (14 M. 14:101) 1. Sibirskiy metallurgicheskiy institut i Geologicheskiy muzey Zapadno-Sibirskogo geologicheskogo upravleniya. (Gornaya Shoriya-Copper ores) SINYAKOV, V.I.; SINYAKOVA, N.M. Monticellitite skarns in Gornaya Shoriya. Zap.Vses.min.ob-va 90 no.6:720-727 '61. (MIRA 15:2) 1. Sibirskiy metallurgichoskiy Institut, Novokuznetsk. (Gornaya Shoriya--Skarns) SINYAKOVP V.I.; FEDYANINA, Ye.S. Lower Ordovician sediments in the Kaz iron-ore deposit of Gornaya Shoriya. Mat.po geol.Zap.Sib. no.63:41-55 162. (MIRA 16:10) SiNrAKOV.0 V. I. Bruc:ite from Gornaya Shoriya. Zap. Vses. min. ob-va 9.1 no.3: 358-360 '62. (MIRA 15:10) 1. Sibirskiy meta.Uurgbichookly institut. (Gornaya Shoriya-Brucits) SINYAKOV, V.I.; NOVOZHILOV, V-I- Gomparative study, of the microhardness of galenites from complex metal deposits in the filtail eastern Transbalkalla, and the Mari- time Territory. Geol. I geofiz. no.10:169-17i 164. (MIRA 18:4) 1. Institut geologii. t geofiziki. Sibirskogo otdejeniya, AN SSSR, Novosibirsk. - SINYAKOV, V.I. Ferruginosity of monticellites. Zap. Vses. min. ob-va 93 no.3: 357-360 164. (MIPA 18:3) slhw.yl(jv, V.10 Dependence of the microbardness of magnetite on the conditiow governing its formation. Geol. i geofiz, no.2:32-1+0 165. (MIRA 18:9) 1. Institut goologii. i geofiziki Sibirskogo otdeleniya AN SSLSR, Novosibirsk. ARKHANGIMI~XIY, P.Yo.; RXRNSHTRYN. A.M.; BYKOY, M.A.; BLUGACH. M.L.; ILIT-ASHHVSKIY, Ys.A.; KIRILLOV, A.A.; KOZLOVSKIY, A.S.; KRYLOT. N.V.; IJWV, N.M.; MARTYNOV, P.T.; HIKAHMOV, B.I.; PARUNIN, V. Ye. ; RUDANOV, M.L. ; "IjLn~MOVV K. ; FAL I KNER, 0. G. ; P3TRYAff , A.I., red.; 'BATIOD, A.I., tekhn.red. [Kanu 1 on the construction of farm buildings] Spravochnik po, aeliskokhoziaistvennomu stroitel'stvu. Koskva, Goo.isd-vo selikhoz.lit-ry, 1960. 7o4 p. (Farm buildings) (KERA 13:12) KIRILLOV., A.A.,, kand.teklin.nauk; BERGER, F.Ye., inzh.; KORIMLITSYNY R.R., inzh.; SINYAKOV, V.K.-, 144-4- Adhesion of freshly placed concrete to "oldn concrete. Gicir.stroi. 32 no,7:28-29 J-1 162. (MA 15:7) (Concrete construction) KIRIJLOV, A.A., kar-d.tek-lin.nauk, dotsent; ~;IITYAKOV, V.K., kfiLnd.tekhn. nauk; DAVYDOV, Yu.S.,, inzh. Steepness of slopes of underwater trenches. Izv. TSKHA no.3:195- 199 163. (MIRA 16:9) (Hydraulic structures) SINYAKOVy.-V*K., inzh. . " z-11-1. ~ Experimental studies on the stability in assembled reinforced c;crete supports of tubular section. Izv. TSKhA no.6tI99- 2 -~16la (KM .16:8) (Reinforced concrete construction) KIRILLOV, A.A.; SINYAKOVP V.K.1 DAVYDCV, Yu.S. Determining the slope of e=b&n)=entv of underwater pepeline trenches In loose soils. Stroi. truboprov. 8 no.8:14-16 Ag 163. (KM 16:11) GAAB, M.T.; VARNAVSKIY, M.G.; TUKANOV, A.F.; SINYALDY. N.; SONOKATOV, X.A. %"~W J. N[amsures for mintaining prezz-!re in petroleum strata. [Suggested by Gnab,.M.T.; VaimaTskly, M.G., Tumanov, A.F.; SinyakOT,'J.11., Sonomatov, N.A.] Prom.eneror. 12 no.10:22 0 '57. (MIRA 10:10) ~~)il field flooding) S/219/62/053/005/004/004 AUTHOR: Sinyakov, V. S. 1015[1215 TITLE: -)G -ultra!io~ic-~~p-aratus for the determination of the size of individual organs in the living organism PERIODICAL: Byulleten' eksperimental'noy biologii meditsiny, v. 53, no. 5, 1962, 132-134 TEXT: The apparatus is built according to principles developed by R. F. Rushmer et al. (Circulat. Res. v. 4, 1956, 684). A short ultrasonic impulse (0.5 microsec) is imparted to the organ and the time passage of this impulse through the organ is measured by piezometers located counterlaterally. The ultrasonic carrier frequency is 2.5 megacycles /sec and the impulse frequency is 1000 cycles/sec. The apparatus was tested on dogs with induced aortic insufficiency. The accuracy of determination as well as the minimum measurable size depend mainly on the ultrasonic carrier frequency. ASSOCIATION: Laboratoriya po razrabotke biofizicheskikh metodov issledovaniya (zav. V. S. Sinyakov) Instituta normal'noy i patologicheskoy fiziologii (Dir. - deystvitel'nyy chlen AMN SSSR V. V. Parin) AMN SSSR (Laboratory of Biophysical Research Methods [headed by V. S. Sinyakov]) Institute of Normal and Pathological Physiology [directed by V. V. Parin, member of the AMS USSR] AMS USSR) Moscow PRESENTED: by V. V. Parin, member of the AMS USSR SUBMITTED: May 11, 1961 Card 1/1 of (-vial. -18:10) o c r~ L- 114 SS R, SINYAKOV., V.S. Small-sized 2-channel trans is torized,s tiradator for the electrical stimulation of biological objects. Biul. eksp. biol. i mad. (i.e.531 no.3:1.17-120 Mr 162. (MIRA 15-4) 1. 1z laboratoz-ii o razrabotke biofizicheskikh metodov issledovaniya (zav. V.S.Sinyakov5 Instituta normallnoy i patologicheskoy fiziologii (dir. - deystvitelInyy chlen AMN SSSR V.V.Farin) AMN SSSR, Moskva, Predstavlena deyritvitellnym chlenom MI S3SR V.V.Parinyra. (ELECTROPH~SIOLOGY.--EQUIPME!-?r AM SUPPLIM) SINIPLYOV) V-1-11, Method of continuous rec,~I-dLrig of the thickness of the myocar- dium in exper-Imemts or, animals. Bi-til. eksp. blol. i med. 55 /Le. 56/ no.l(%I114-;l16 C?63 (MIRA 17:8) 1. Tz laboratorii po razrabotke bioflzicheskikh metcdoc issledo- vaniya (zav. - V.S. Sinyakov) Instituta nomallnoy i patologi- cheskoy fiz-iologii ( dlr. - dey-st-vitelinyy chlen AM SSSR prof'. V.V.r'arL-j) AMI SSSII. FredstaViena deystviottlInym chleziom AMN SSSR V.V. Parinym. SIITAKOV, Ye. V. "On the Nature of Additional Conductivity of Di-Electrics in Strong Fields," Zhur. Eksper. i Teoret. Fiz., J-1, 'No. 4, 1941. I-Ibr., Dnepropetrovsk State Univ., -1940-. 09 DY-- a rui" of this Pairizatim .1 borim, Nboosetis. -4i"Yakov H A StAtill-hulk. asuf D. K. Cbernvl (I Z40F F*rjooif. T-011- Pill, 21. 10-17 I =1v (101) -The Met", "Met: to or IMATIC), was nerasuml in tretaliff"I"r if 0 linlood"s jorreluml by 11111WIS'.1 steel Imils Against is 24forl 0-11r; yestriollsol of Her %I$* lot the 4terl halloo 1 valimilein 4.0 the donations 44 ON 11"Imilar front zille 10 x Its (1) Within thumir 111'"Its , ON "'Whithow of " as & fum"m Of The temp. Is unaffected by the Jor"Ok of the hispulm; a at the Curk point is dillittly. Wonsm th- in k104requormer (109 hims) ii.e. The emw fitbomes t in d.e., asit! due to the cooled, (lis in offer sisort r1rits"onefso, Curves no v me a Its"'-fivel 44 1140 rl'v~ brit"llem, Inelthestf. (2) el.ld UI-21) bv /veto ), twits" the Ouis I"411t. hdvv a "tat"; that is I, not due to fuct-CfAils foulArse,41ion at the Water E is dornsm- SUSIM bY I he jK"6tCJJCV Of I be of be low the " it" ses". In cxfov%. its which previt4l""ib. -W& Otatt!d. coolly wipord out by hevid" to brivevem C41nm*uttve In cyclic ormiAtim of 9, levels the Curit Point, I fit ImilArital im Q fisionsis is loymerrotie hamp, - 4 dkmgb mostre. 6 not reached, the lit loop is dimindly, issyms. with worspeci to the althe of E. but ibis asymmottry dismittiothee, in repeated cycles. The 4wititessievem, palmisatiew, is of the arder of 4-0.6 X 10-a coulmosbal/sq. cm, (3) In Centroem to Rochelle sdt. slit ixilarixation Q in J6T" Is mot mdelitive. be the sell*- thAt at Moo. E And temp. %be iantneviette lit Q In fseeserrusit-9 "Just Interval% fit tionvol Or not -0-1. in raill flit of dieverrot IV he. A ~,< tit -0. A X tit IN 9 x 10 1 see. rat Is, with v"b flowing cuter taines kmu after Ilculonled healloll of The sim1wit, ploolis (it Q 04sel- the t lilt 1. (or tile 3 fielitulse le"Alks P. bum () *I Iboo #Aso* i to(A I to be nouch ;remster with this shourter r. O*W to thiss absence of Additivity in D&TiO%. the rat of polAriesistlemn, i, ifetti. by the xI,vj-,4 the curvrVt) at I - 1). is not a true rave some lit(mish it else ionle ill-loght Into of tile pt-- A. illmtq.tr~l fly 4 enter rt x - 3.7511 or irs", I - X I(, I - a fula-41,141 Of the 1901ji, IWIIAV" its the dickv. "'A t WT". With A PtAk At AIMUt IWV. As a function of F. below the Curse point. i izscorlru~w-, note- live-Arly with E. approx. following of at Ae%m. wbrrv A And .Ayr tellip-Irlwiulvist. AbovetheCuritimAut,skostittr4f fUjlV1;.W% 0( h., tlltMti4%n4I 11110littkillAffor Itulmitalwal of A moomple list heatimig "suit. 41 a dintin- ishe,t , see . "J.-iltirlit sales, thAt egret inctrawo with its- elab i'le.4,1111 I., lisp ('1111" 1-1111 .10 $-01,411V aw- it. I Il fliv NO AM IM 111h Id It 100t'-01-1- Itels- 01.411,v wily In lite I-Irwilvir of 11111"Ill(k. giving fiw I's live 14.4" 14m. 61.1wair, that Its 1"" 1. Jus, 11" thIlS 4A lAttikV MIS 1,171 VILCe" IVA 1 1 4.114; thi. Otmt tm.tlli:~4 lexiorls of mixilitaitrous PoLvistation th"Isurth the sietkm of lite , file 'J'fillillesl tell, 'I'lle 411.1111. 1. 'Jil.40 111julleill ' ' 4 IlIm Mir asi.-. ms applis-mloia of its% extristA fit-hi ims lite ir- mill of offirre 114" imirs. With hurrit,%liog E, the isler 4.1 the .1i ulaid they conle to collut with ime musiher. at which jil-ilit Q FrACIM-11 16MU.; the VdkSa Of J!" 141 WISiLh the 144111. Iss reachni ishmshl ift-cirraw with Incirra,iltis impurity kmitrisf. all" tilim, Curie I.A.It shuuhf ishift to lower tritips. The 1.1 intpultir dets. the Isrsillitilitilion thimmigh growth of the rvilious Of 1111011114"Vous Imilmistat6l suld rotalkirs of their vier, dilsole 111ollsellt; lite hictirsiar of l') lit tuttll%.T 1111pulisrs 1. attiffstil"I U1 A-3111104tissit 411 WVAIIY IRRIIIII VIVIIINS' AN.Aind tire jje,l lesi.Ki.. I.V~ it) 141vivassing iq~v cluuts'. Miss I.Aut of virw 6 ct"llshormal by twelillihimy sritptm. "I the , imlilol- lJoss of the pootaliAl its D*Tk-k, wkkb bdow she Curie $%Alit rrmalum Uniform wbde the cuffersit drcmuyss with litne. wheresais above the Curie point there I% no ilremoe ~ of the current. I.e. no n1mm ckaxe. N. Tbnn MU/21ectriefty 'DIelectrics Doe 51 "Effect of Diiplacing ?ield on Magnitude'of Dielectric Peraiiability and Dielictric Losses in,BaTiO 3) " Ye V. Sinyako-~, Ye.* A. Stafa*y- chuk, L. S. Sinegubova, Dnepropetrovsk State U "Zhur Eksper i Teo~et Piz- Vol xxi, No 1~, Pq 1396-1402 Study of thermal behavior of dielec perme- ability and losses of BaTiO under effect of aisplacing''elec field sh6ve~ shift of-Cur.i6 point toward high6r'tiemp. Found sharp'drop of tangent of angle"'of dieled losseb'and sm6othing oi its characteristic max under superposition at" USSR/Electricity - Dielectrics -Dec 51 (Contd) strong displacing field. Observed distortion of hysteresis loop under displacing field effect. Submitted 27 Jan 51. 198T13 SINYAKOV, Ye. v. USSR/Electricity - Dielectric* Fob 52 "Potential Distribution in Barium Metatitanate wA in Other Ceramic Dielectrics," Ye. V. Sinyakov, B. X Chernyy, Chair of Electrophys, Dnepropetrovsk State U "Zhur Tekh Fiz" Vol XXII, No 2, pp 265-267 Test results proved that potential distribution in all tested materials TiO2, (Ba - Sr) T'03 and BAT'03 remains linear in a wide range of temp afid is inde- pendent of time during which sample is exposed to elec field. These results agree with conclusions by Ksendzov (cf. "Zhur Tekh Fiz" 20, 117, 1950) stating that titanium dioxide consists of a dielee and a semiconducting phase. Received 29 May 51. 209T53 ir c, e o 9. Monthl List of Russian Accessions, Library of Congress, :)2ceL'22'r 1951, Uncl. 2 Usca/Physics Seignette's ceramics Card 1/1 Pub. 22 - 13/52 Authors I Sinyakov, E. V. and Izhak, I. A. Title I Effect of mechanical pressure on the dielectric constants of segneto-ceramics. Periodical I Dok. AN SSSR 100/2, 243-2461, Jan 11, 1955 Abstract I Experiments with Seignette's ceramics are described. The experiments were conducted for the purpose of finding out the effect of mechanical pressures on the dielectric constant of Seignette's ceramics. The dependence of the Curie point on the pressure is also established. Four ref.~rences: 3 USSR, 1 USA (1945-1951) Graphs; table. Institution Dnepropelrovsk State University Presented by Acadendcian A. F. Ioffe, September 10, 1954 -vr USSR Radioph3,sics T A2 Jour Ref Zhur Fizika, No 11, 1957, 110 10035 Author :_fLinyakov, E.V., Galpern, VS. Inst :-Dn-e-p-fb-pe-tP5V-.~3k~niversity, USSR Title : Investigation of the Dependence of the Dielectric Constant and the Tangent of the Dielectric Loss Angle of Barium Ti- tanate on the Intensity of the High Frequency Electric Field. Orig Pub : Zh. eksperim. i teor. fiziki, 1956, 30, No 4, 675-680 Ostract *. A method is described for the investigation of the dependen- ce of the dielectric constant and the tangent of the dielec- tric loss angle of barium titanate on the electric:field in- tensity at various temperatures with the aid of a measuring circuit, containing a linear variable capacitor, whose rotor is driven by electric motor at 1.,500 rpm. During one half of the period, the capacitance varies linearly, and during the second half it diminishes. Over this cycle, upon suita- ble choice of parameters, the circuit is -hfice in resonance with the generator, and the resonance is fixed on the oscil- logram in the form of two resonance curves. By connecting Card 113 USSR / Radiophysics Abs Jour : Ref Zhur - Fizika, No 4, 1957, No 10035 Abstract : the tested capacitor in parallel the peaks of the resonant curves are shifted by an amount proportional to the capa- citance connected; the shift serves as a measure of this capacitance. Heating of the specimen upon application of a high field (up to 3.2 kv/cm) is prevented by the short ti- me of application of thehigh frequency field (0.1 seconds). The maximum error in the measurement of capacity is esti- mated at 2%, an d in the measurement of the tai gent of the loss angle at 25%. The tangent of the dielectric loss angle is determined by the method whereby the circuit is detuned as the voltage is measured wiih a vacuum tube voltmeter. It is shown that the non linearity of C = f (E), the tem- perature behavior of the capacitance, and the tanFent of the loss angle for barim titanate at high frequency and in strong fields all have a character analogous to that observed in weak Card 2/3 USSR / Radiophysics Abs Jour Ref Zhur - Fizika, No 4,, 1957,, No 10035 Abstract fields. At a frequency of 1 Mc the capacitance is less and the nonlinear properties are less strongly pronounced than at a frequency of 50 cycles- In addition, the tangent of the loss angle depends weakly on the field intensity. A mare pronounced manifestation of the nonlinear properties of ba- rium titanate in the region of the Curie point is attributed by the authors to the fact that the rotation of the moments under the influence of the external field is facilitated in this region. Card 3/3 M 537.226/.2'27: 5-46,431.824-M W.-) InvestiZa;ion, of the Dependence of and the Tangvnc -of .!Iectr* the M Ic LM A.,J. of Irarlum -4 jir~afe on -he Strength of a-1-11ghj_ t !9-56. of. 301, No. 4, Pp. 6715--ijab.) R-sui%..; J is.,i ~pcrinxcntui mv~_tigauutt show that (a) the mnfirtcac juopcvh-_ ef-ihi- mmwic..' arc Icm pronounced at a frtiqimacya t _'LfCft t, han .1 10 r/s. fb~ d)( nonlinear cffect; arc nvwito,i :,.-ar uh, Curi, i,inpera- t, t!p i" a-u; 2T,- pv~, rt-I grapllf'.111~ SINYAKOV, Ye.V.1 CEMRNTY, B.K. X-ray diffraction study of the system BaTiO 3 - N10~4r02, Piz. tver. tela 1 no-2:352-354 7 '59. - MIRA 12:5) l.Dnepropetrovskiy gosudarstvannyy universitet, (Systems (Chemistry)) kl-ray crystallography) 2- 4, 7c1 o 0 AUTHORS: S/SW60/000/01/015/041 E201/E491 Sinyakov, Ye.V.j Avramenkoj-V.P,, Kudzin, A,Yu. and -ZuYWV-,-A.P. TITLE: Investigation of Magnetic Properties of Certain Mixed Ferrites -~~ PERIODICAL%Izvestiya vysshikh uchebnykh zavedeniyj Fizlka, 196o, Nr i, pp 8o-86 (USSR) ABSTRACT: The authors investigated magnetic properties of the following mixed ferrite systems3 nNiA1204 - lOONiFe2O4 (I) nCoA1204 - lOONiFe2O4 (II) nNiMn204 - lOONiFe2O4 (III) nCoFe2O4 - lOOMnFe2O4 (IV) where n = 0.51, 1,, 3i 5, 10, 15, 20, 30, 40 and is the molar ratio. In these systems one of the components is non-ferromagnetic (NiA1204, CoA1204 and NiMn204)i except in the case of IV where both components are ferromagnetic. Samples were prepared employing the usual ceramic techniques; oxides or carbonates of "pure" and Card 1/3 11pure for analysis" grades were used, Samples were I Y 69441 S/139/60/000/01/015/041 E201/E491 Investigation of Magnetic Properties of Certain Mixed Ferrites annealed at 1380*C for two hours or at 14203C for one hour. X-ray diffraction patterns showed that all ferrites had spinel structure and were solid solutions (Table 1). The following properties were investigated: the temperature dependences of the initial permeability ~109 of tan 6 and of spontaneous magnetization; the dependences B = f(H), and U =-f(H); the coercive force and the Curie point. The concentration dependences of p0 of the saturation magnetization B and of the Curie temperature (0) are shown in Fig I and 2 for systems I and II respectively. Fig 3 shows the temperature dependence of the Q-factor of coils with toroidal cores made of system I ferrites. Fig 4 gives the temperature dependence of' Ii, for system Ill. Fig 5 and 6 show the concentration dependences of lio, of B and of 0 for systems Ill and IV respectively. It was found that introduction of a non-ferromagnetic component lowers the Curie temperature, reduces the Card 2/3 saturation magnetization B and raises the coercive 694111 S/139/60/000/01/015/o4i E201/E491 Investigation of Magnetic Properties of Certain Mixed Ferrites force. These results can be explained using the theory of antiferromagnetism. For system IV ferrites (with both components ferromagnetic) the law of additive variation of properties with concentration was obtained. The losses in all ferrites were due to magnetic polarity reversal. There are 6 figures, I table and 12 references, 5 of which are Soviet, English and 3 translations from English into Russian. ASSOCIATIONgDnepropetrovskiy gosuniversitet (Dnepropetrovsk State University) SUBMITTED: September 19, 1958 Card 3/3 ,~2 AUTHORS: TITLE: S/181/60/002/01/18/035 B008/ "014 Sinyakov, Ye. V., Stafiychuk, Ye. A. Ivi Solid Solutions of Niobates and Tantalateslof Transition Elements Formed on the Basis of BaTiO 3 V1 PERIODICAL: Fizika tverdogo tela, 1960, Vol. 2, No. 1, PP- 73-79 TEXT: The authors examined niobates and tantalates of Mn, Co, and Ni as well as their solid solutions on the basis of BaTiO 3* The samples were prepared by the usual ceramic procedure. The authors prepared compounds corresponding to the formulas AB 20 6 and A2B 207 (A = Mn, Co, Ni; B -Nb, Ta) and their solid solutions ranging from 0-5 to 7 mole% InBaTW 3.The dielectric constant of compounds of the types AB 2 06and A 2B207 within the range of -195 to +1950C was found to be independent of temperature. The quantities E and tan 6 are indicated in Table 1. The compounds mentioned are not piezoelectric. Figs. 1-2 illustrate temperature dependences of r for systems of the type BaTiO 3-AB206- Addition of more Card 1/3 Lr Solid Solutions of Niobates and Tantalates of S/181/60/002/01/18/035 Transition Elements Formed on the Basis of BaTiO 3 B008/BO14 than I mole% of AB 206 to BaTiO3 causes the piezoelectric properties of barium titanate to vanish. Solid solutions of BaTiO 3 with pyroniobates and tantalates of Mn, Co, and Ni (Figs. 3-7) differ greatly in their properties. A strong shift of the Curie point toward lower temperatures may be observed in all compounds of BaTiO 3-A2B 207under consideration (Fig. 8, Table 2). All solid solutions of the systems BaTiO 3-A2B207 are piezoelectrics. Some of them have hysteresis loops of a marked rectangular shape and a non-linearity exceeding largely that of BaTiO 3* A comparison of the electric properties of the systems under review reveals that AB20 6-BaTiO3 and A2B207-BaTiO 3 differ very much in their composition. It may be assumed that the addition of AB 206 to barium titanate leads to structural deformations. This was established on the basis of strongly blurred lines on X-ray pictures of the samples and on the basis of a strong deformation of the samples after sintering (Fig. 9). Presumably, this deformation may be considered to be the reason for the Card 2/3 Solid Solutions of Niobates and Tantalates of S/18 60/002/01/18/035 Transition Elements Formed on the Basis of BaTiO3 B008YB014 disappearance of piezoelectric properties. On the strength of X-ray analysis and the shift of Curie points, the authors detected the form- ation of solid solutions of the second type in BaTiO 3-A2B207 systems throughout the range of concentration. The results obtained here differ from data published in Ref. 8 on the effect of barium niobates and tantalates on BaTiO 3* Presumably, the differing properties of the BaTiO 3-AB206and BaTiO 3-A2B207systems are due to the existence of compounds of transition elements in the various compositions. The samples were prepared in collaboration with L. Kolomiyets and Zh. Bichuch. There are 9 figures, 2 tables, and 11 references, 4 of which are Soviet. ASSOCIATION: Dnepropetrovskiy gosudarstvennyy universitet (Dnepropetrovsk State University) SUBMITTED: April 6, 1959 Card 3/3 AVRAMIMKOp V.P.;ARRARX..~V- (Syniakovp O,V.1 Investigating the electric properties of certain mixed ferriteo. Ukr. fiz. zhur, 5 no.6:791-798 N-D 160. (MIRA 140) 1. %epropetra .vskiy gosudarstvannyy universitet. (Ferratea-El6ctric properti*es) 0 Boo6/BoU AUTHORS: Si5 Solok, A. Zakovp 1:=.k., M. TITLE: Relaxation Polarization of the System SriI4 nMnO PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960, Vol. 24# No. 2, pp. 132 - 135 TEXT: The article under review was read at the Second All-Union Conference on the Physics of Dielectrics (Moscow, November 20 - 27,..1958). In c ntinuation of the studies made by G. r.- Skanavi and others concerning relaxation losses, the authors conducted relevant investigations on ceramic samples of SrTiO 30 hNnO of different compositions.This system was chosen in order to investigate the in- fluenoe of manganese ions on the dielectric polaTization of strontium titanate. MnC03 is dissociated on heating the atmosphere in KnO and C02 ; on further heating, MnO is oxidized to "kurnakite", hausmannite, and other oxides. Hence, the occurrence of relaxation polarization is to be expected in the presence of ions of trivalent manganese in SrTiO,0 The composition of the samples in- vestigated is given in Table 1. a and tan-?% were measured at 1-5 and 12 Ne/Dec S/048160/024/02/03/009 Card 1/3 Relaxation Polarization of the System SrTiO 3* nMnO S/048/60/024/02/03/009 B006/B014 by using a Q-metor of the type KV-1 in a wide temperature range. Results are given in two diagrams and a further table. Fig. I shows the temperature de- pendence of a and tan2A on samples with 97 SrTiO 3 + 3 MnO at different fre- quencies. The maximum of the temperature dependence on E in found to shift toward higher temperatureswith rising frequency. The existence of this tenperature maximum and its shift are indicative of a relaxation polarization ;.n this system. To clarify the structure of these samples, an X-ray structural analysis was made, the results of which are discussed and given in Table 2. Fig. 2 shows the temperature dependence of a and tan-aA in samples of the system Bi2030 ano (n - 1,20). In this sjrstem, e is very strongly dependent on temperature. Its values at three different t mperatures are given in Table 3, as well as the values of tan?/g for the oompo:itions (100-n)SrTiO 3 -n(Bi203 AnO) for n w 19 3, 59 and 10. In conclusion, it is stated that (1) the introduction of manganese oxides into SrTiO 3 leads to the appearance of ionic relaxation polarizationj (2) relaxation polarization also occurs in the system Bi 2030 nMnO, in which the relaxation of weakly bound electrons is possible in consequence of Card 2/3 Relaxa'0ion Polarization of the .01-stem S:rT.'0YnJEnO S/04SJ60/024/02/03/009 B006/BO14 1 -, , ... ,, + the simultaneous presence of bivalent and trivalen'.: 1.%3., Yzi . ~ ~i-A transitions are possible; (3) simultaneous presence oi weakly bound ions and electrons in possibl* in the system SrTiO Yn(Bi2030 fto). There are 2 figure99 1~ 3 tables, and 4 Soviet references. Card 3/3 fi/ 3 7, 113 S) //'/-3) 85on S/04 60/024/010/020/033 BOI 3YBo63 AUTHORS: Sinyakov, Ye. V. and Chernyy, B. K. TITLE: The Problem of the Electrical Conductivity of Barium Titanate and of Some Solid Solutlions on Its Basis PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960, Vol. 24, No. 10, pp. 1255 - 1258 TEXT: The authors studied the activation energy of alkali earth perov- skites. Table 1 lists values for the activation ener ,gy of alkali earth titanates on the basis of Ref.1 and measurements of"(BaZrO 3 and SrZrO Table 2 contains the activation energies of solid Ba(Ti,Zr)O 3 and )~n)O solutions with an increase of the concentration of BaZrO 13 3 and BaSnO ".according to data from Ref.3. These data indicate that the conduction band in barium titanate is formed by the levels of titanium ions. The investigations described in Ref-5 and in the present paper show that a jumplike rise of electrical conductivity occurs at the Card 1/3 850 The Problem of the Electrical Conductivity S/04M60/024/010/020/033 of Barium Titanate and of Some Solid B013/BO63 Solutions on Its Basis Curie point. Fig.1 shows the functions of logo - f(I/T) for barium titanate with or without admixtures. The percentual content of admix- tures in BaTiO 39 the Curie points, and the values of resistivity for the compositions under consideration are specified in Table 3. It is noted that the increase of electrical conductivity in the region of phase transition is primarily due to a re-formation of the lattice and a lowering of the conduction band. The electrical conductivity of solid (Ba,Ni)(Ti,Zr)O3 and (Ba,Co)(Ti,Zr)O 3 solutions was studied between 260 and 500C within a field of 0.55 kv cm-1. The dependence of elec- trical conductivity at 1810C and of the activation energy upon the com- position is illustrated in Fig-3. It was found that in the system (Ba,Ni)(Ti,Zr)O 3' the decrease of electrical conductivity in the region of formation of solid solutions is related to the substitution of barium ions by nickel ions. Substitution of barium ions by cobalt ions in the system (Ba,Co)(Ti,Zr)o 3 leads to an increase of electrical conductivity. A reverse effect of nickel and cobalt ions, observed by the authors, is Card 2/3 85011 The Problem of the Electrical Conductivity S/04 60/024/010/020/033 of Barium Titanate and of Some Solid B013YJ3063 Solutions on Its Basis probably related to the fact that the electron shells of these ions are filled (14i 2+_ 3d8; CO 2+_ 3d7). The thermo-emf was measured on the same samples as the electrical conductivity. The coefficient of the thermo- emf as a function of log I for the system (Ba,Co)(Ti,Zr)O3 is illustrat- ed in Fig-3- It may be seen that the-relation a - A, - C log d (Fig.3) which is well known for impurity semiconductors is valid in this case . a is the coefficient of the thermo-emf+, a the electrical conductivity, and A and C are constants. The value of C determined for (Ba,Co)(Ti,Zr)4 is similar to the theoretical value (200-4). In the case of barium titanate and solid solutions of (Ba,Ni)(Ti,Zr)O 3? C is three or four times greater than the theoretical value. The present paper was read at the Third Conference on Piezoelectricity, which took place in Moscow from January 25 to 30, 1960. Tge-re are 3 figures, 3 tables, and 10 references: 8 Soviet. Card 3/3 85884 9,21,90 S/046/60/024/011/020/036 2 2 00 00 113 V 3) B006/BO56 AUTHORS: Stafiychuk, Ye. A. and Sinyakov, Ye. V. TITLE: The Electrical Conductivityl f solid solution 'of Niobates Basis and ~antalates of Mn, Co, and Ni on a BaTiO.... -A -1 - '-~- I - 7 PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960, Vol. 24, No. 11, PP. 1380 - 1383 TEXT: The present paper is a reproduction of a lecture delivered on the 3rd Conference on Ferroelectricity, which took place in Moscow from January 25 to 30, -196o. The authors investigated the dielectric proper- ties of polycrystalline samples of solid solutions of Mn-, Co-, and Ni-niobates and -tantalates on a BaTiO 3 basis in variable electric fields, and give a report on the results obtained with respect to the temperature- and concentration dependence of the electrical conductivity, the thermo-emf,as well as of the influence exerted by Mn 2+_ , Co 2+_ , and Ni 2+-ions upon the electrical conductivity of BaTiO,,. ;he production of Card 1/6 85884 The Electrical Conductivity of Solid Solutions S/048/60/024/0',1/020/036 of Niobates and Tantalates of Mn, Co, and Ni B006/BO56 on a BaTiO 3 Basis the samples had been described in Ref.l. On the disk-shaped samples, platinum electrodes were fixed by means of cathode sputtering. The in- vestigations were made within the temperature range of 50-2000C and with fields of the order of 20 v/mm. The most important results of the mea- surements are given in Tables 1 and 2. The "compounds" given in the form "A 2B 20711 showed a break in the curve log d = f(l/T). The temperature at the break, the activation energy (calculated according to the formula 6 = a 0exp(-u/2kT), and the resistivity increase during the transition from M-,-.~ Ni. The results obtained by investigating the influence exert- ed by the various ions upon the ferroelectric properties of BaTiO 3 are g..Lven in Table 2. The temperature dependence of the thermo-emf a is shown in the three diagrams of Fig.2 for the solid solutions of the kind BaTiO 3 - it A2B2O 7 11 for various concentrations of the additions. The a(t)-curves take a considerably different course and partly also differ considerably only in the case of different additional concentrations. Thus, e.g.$ BaTiO 3 with I mole% "Mn 2Ta 20 7*1 shows a a decreasing Card 2/6 The Electrical Conductivity of Solid Solutions S/048/60/024/011/Q20/036: of Niobates and Tantalates of Mn; Cot and Ni B006/13056 on a BaTiO Basis 3 exponentially with temperature, and with 0.5 mol~%o, a increases ex- ponentially with temperature (between ib and 1500C). There are 2 fig- ures, 2 tables, and 4 references: 2 Soviet and 2 Japanese.. Ta6anqal Tablo I 0 Oil 14r. TA 149% "7a" Coeannenue U. ev. Cm COCAUffelate Typa nano. e 9) ex Z .3 -m . Table I MnTa%04 1,84 1,03-1011 tMn2TaI07# 0,54 1,02 115 6.106 CoTa2O6 1,7 3,57-1011 tCo2Ta2070 0,62 1.16 '127 2-107. NMA 1 08 3.101o 9NI2T8207* 1,92 1,56 153 4.1010 INInNb,0. 1:08 2,49-109 OMINN078 1 38 1.6-101 CoNb2od 1 56- 2,99-1010 , 4C02NbzO7* 1:46 1,76 M 5,2.107 NjNb:0,' 4:74 7,7.10L1 4NI,NbIO71 1,62 1,19 150 6,2. i0l' Legend to Table 1: 1) Compound; 2) U, 3) resistivity at 1490C, 4) com- pound, 5) U1, 6) U 2, 7).temperature of the breaking point, 8) resistivi-~ 0 ty at 149 C. Card 3/6 e C) C\I H E-4 C\) 1,,0 0 ID ~m '00; Itt \0 '0 410,qNzulqt U3 pq toile I WO 9 Sol-We sslo to,; c to; -816 , ., NIT z 0101,; ~679 SWO 1 alm-SIC Zlj Ell Slo GOPWI - Wo z go; -E's 98,0 VT I u0; .86, 1 W1 t, 1 9 TIQI - 8z, czo, I gs, i c ItOPE VO 6'; z TIOPVC 9,0 Z8, I 401-V9 JIVI mll z 6101-c'z 96,0 to' ; G Otol -6,z - Flo, ; c - zol; E 8911 1 %to; * 9, L tlo olz Vo 0101.8,; 119,0 OL'o 9 0101 .6, z - SLIO c 1101-C,; Wo 9VI z Lo 1` 9, 1 Eg, o 9, viol-We Wo 911 'o 9 tiol-gl; vt, C 9,z '.19; vidu Ijxd A.9 "n AD "n ILOCqWOOP 41'OTWIN' oozqNu;v IONNOD lozqNIN ca Imargolf C-'j /020/036. S/048/60/024/011 Boo6/BO5b 'o Ft s sl I 00 c;0 N el C'I c0 C~ C~ go CI 0 c~ z St 00 Table ~C~.j "' 1 1. 1 00 u 06 a o z Z C4,; C4- C~ C; Card -5/6 ------- Cli E-1 P4 4) Ib 0 0 c0 ~ 0 0 00 10 ltl~o Z- - - r4 CC) 0o -~, 0 - OOT*9,Z . , 401 V; r, W PQ l voi-Vo 0 4-3 Eel 4101*D tiol-6,z Wo W 4~ to; P -ri 43 > so; - V; sol-L,c oo;lzlz; sol-SIZ 201-ZIg* - 0 0 ra 010i'z a S101*911 GIOT*9,z OV; 110; * Z' CIO; 9: c Z' I - C14 VCT IIOl*z,S 010; 'X I O'l al lto;,L,z oto;-Sa gs-0 0 u 010; - 9, Z vOT - L'6 -r4 0 4~ - nOT,L'; s0;-919 f tloila'; so t .9 16 t8,0 Cd 4-2 ItOV9 xtol,V; Cd 43 810 rA 06 uOT -L'1 0101*t,; Q'O (:~ .> 091 itO;*6'8 110T.Z: ; t9, 0 4-2 XIOT'G'Z 010; * t S; "10 Cd a) E-4 Pi co te, 0 0, 86 !9,1; 110; 96'T L'O Lf'% a 10 a) \0 4 N4 rd DRUM U -JG-tj-, '.DL j1dil ItAd *.091 ndu rAd ~4 "It 0 cd u 85885 S/04 60/024/011/021/056 B006YB060 AUTHORS: Sinyakov, Ye. V. and Stafiychuk, Ye. A. TITLE: Properties of Some Solid Solutions of the Type -A ~~-"A 2B207" in Strong Electric Fields PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960# Vol. 24, No. 11, pp. 1384-1386 TEXT: This is the reproduction of a lecture delivered at the Third Conference on Ferroelectricity which took place in Moscow from January 25 to 30~ !960. The authors exaTined specimens of compositions AO - B205' 'V 2AO _ B205' where A:-A;&i,-'Co,fti and Bkb or'lTag as well as their solid solutions on BaTi03 basis. The compositions 2A0 - B205 proved to be a mixture of meta-compounds with oxides of bivalent metals and are called 11pyrocompounds". The nonlinear properties of the specimens were measured at 50 cps with an instrument described in Ref. 6.at temperatures which were about equally distant from the Curie point. The measurement results are graphically shown in Figs. 1,2 and numerically compiled in a Table. Card 1/3 85885 Pr-.perties of Some Solid Solutions of the 3/048/60/024/011/021/036 Type BaTiO,_11A2B2071# in Strong Electric Fields m_,ro6/BO60 Position and height of the peaks of the F,(E) curves are greatly dependent on the addition; BaTiO 3 - 11Ni2Ta20,11 has, e.g., for 0 and 1 mole% addition about the same f,(E) curves, while at 2 mole%the maximum lies at smaller E and is considerably higher, and at 3 mole%the F_(E) curve is considerably lower, the maximum being small and appearing only at large E ,,alues. Fig. 2 shows the effect of additions upon height and position of the maxima of the e-(E) curves. Investigation results are in good agreement with X-ray and high-frequency experiments. It was found that the tntrcduction of bivalent cations of transition metals causes the tetragonality of unit cells to drop considerably and that the Curie point is markedly shifted toward low temperatures. The greatest nonlinearity is found ir) guch compounds as exhibit the least tetragonalities, i.e., those with Ni2+ ions. Although the ionic radii of Mn2+9 C02+, and Ni2+ are not differing appreciably, they still have quite different effects upon the properties of solid solutions on BaTiO3 basis, which fact is explained by the different filling of the 3d subshells of these ions. There are 2 figures, 1 table, and 7 references: 5 Soviet, 1 British, and 1 US. Card 2/3 85885 Proporties of Some Solid Solutions of the. S/048/60/024/011/021/036 Type'!BaTiO A B 0 in Strong Electric' Fields B0061BO60 3 2 2 7 I Mon. % '2 mop. % 3 Mon. C/a 0,-6 k C Ik rn V CH-9 Vem- ~kv CNIn2NNO70 90 7 10800 1,007,- 35 3,3 16000 -25 12 5100 -tCo2N"D-_07# 82 5 12000 1,005, 22 2,2 208W -70 8,6 7340 4Ni2Nb-.0?* 13 4,3 9750 1,003, 1- 1,09 32400 -95 6,86 MO tAlnja207s 82 7,6 8100 I,OW& 44 2,98 11000 8 - - eCosTa207s 85 6,18 12800 1,004, 7 1.95 IC400 -76 9,23 5200 4NIeTaO-:# 66 3,2 14900 1,0041s -7 1,45 28000 -108 4,14 8040 Legerid to the Table: Nonlinear properties of the solutions of the BaTi q%3 - AOAB 2 06 type. 1. Addition. The subscript m denotes the Value'at. the i(E) curve maximum. CardW3 20U6 1.,V300 ~9~(d 116T S/181/61/003/00211/014./050 , / / q7) B102/B204 AUTHORS: Sinyakov, Ye. V. and Avramenko~ V, P. TITLE: Investigation of the electric properties of some mixed ferriteo in variable electric fields PERIODICAL: Fizika tverdogo tela, v. 3. no, 2, 1961, 411-415 TEXT; Though ferrites are being more and more used in industry, their electric properties, especially in solid solutions of ferrites, have been insufficiently investigated, The electric properties of ferrites have some peculiarities, as e.g. the high value of 1~, at low frequencies; e decreases with increasing frequency. Whereas, the high 6-value and its frequency dependence is explained by many authors by the kind of crystalline structure, V. A. Ioffe et al. were able to show that tho behavior of -the )t of ferrites does not depend on the crystalline structure but is due to relaxation processes- As a contribution to this set of problems, the authors investieated the temperature dependence ofE and tang of mixed ferrites, the mechanism of polarization and dielectric losses, as well as the dependence of 'these rharacteristic;s on the Card 1/5 20116 3/181/61/003/002/014/050 Investigation of the electris B102 B204 composition of the following four systems of ferrites (100 n)NiFe 20 4'- nCoA!204 ~ (100 - n)N'Fe204 - nNiAl. C14 ' (100 n)NiFe2 04'- nN_,11n204 s (100 - n)CoFe 204 - nZnFe 204 9 n = 0-5~ 1, 3, 5, 10, 11 ';, 20j 30, 40 mole-'. The specimens were produced in the same manner that is usual in semiconductor ceramics. They had the shape of 1.5-2 mm, thick disks (35 mm diameter). The temperature dependence of ~ and of tan,~ was measured by means of Q-meters of the type V_F-5-1(KV-1) and VV-1,(UK-1.) between 20 and 2600C and 10 6_ 10 7 cps. Measurements were carried out of some specimens also down to nitrogen temperature, The cooiing rate was I deg/min within the range of from 20-2600C. in the low tpmperature range 1.5 deg/min. Temperature measurements had an accuracy of up to f 1.50C. The results obtained by the investigations are all graphically represented. Figs. I and 2 show E(t) and tanA = f(t) of the system (100 - n)NiFL- 2 04 - nCoAl 204' Analogous curves were obtained also fcr orner systemse and tan generally decrease with increasing number of additional components, Card 2./5 20116 S/ 181 /6 11003/002101 A 1050 Investigation of the electric B102/3204 with the exception of the system (100 - n)NiFe 20 4 -nlNi~,Ln2 049 wbere tan ~ increases with increasing n,. Also ele.-tric ocnductivity decreases in all systems, with the exception of the aforementioned, with increasing n. For the purpose of investigating the character of the losses, tan6 was calculated by the formula tan ~ = 1.8,10 12 r3A f, and compared with the measured values for the system-(100 - n)N-LFe2o 4 - '111iYM20 4' The measured values at low temperatures (-- 8U'-C) are somewhat higher. At low temperatures, the curves tan,4- = f(t) have a maximum, which proves the relaxation character of the losses. A comparison of the activation energies calculated from the temperature functions of i and tan !J indicate that electron relaxations are concerned. This was proved by direct measurements of log(tan--') = f(1 '/T). Thus, all result confirm that the dielectric polarization and the losses of these ferrite systems have relaxation character and are caused by ele--tron exchange between 2- and 3-valent metal ions.. which are located in the same lattice sites. There are 6 figures and 7 referen:~es: 3 Soviet-b-loc and 4 non-Soviet-bloc. Card 3/5 2011-6 Investigation cf the electric o" ASSOCIATION. Dnepropetrovskiy gosudarstvennyy elektrofiziki (Dnepropetrovsk Department of Electrophysics) SUBMITTED: April 23, 1960 S'/18 61/003/002/014/050 B702/3204 universitat Kafedra S~ate University. Card 4/5 20.Lib S/181/61/003/002/014/050 Investigation of the electric ... B102/B204 SIV, 500- 14 - go QV - 12- fy 300- x 10- 10 15 20 8- jo 100 x Ix IX 0 Card 5/5 80 160 Z40 0 80 /so 240 7' TIMM -z'- SINYAKOV Ye V AVRW'ENKO .1 V. P. InveStigLting the electrical properties of some composite ferrites In alternating electric fields. Fiz. tver, tels, 3 no.3:411-415 F 161. (MIRA 14:6) 1. Dnepropetrovskiy gosudarstvennyy universitet, kafedra elektro- fiziki. (Ferrates--Electric properties) (Electric fields) S/181/62/004/010/052/063 B102/B104 AUTHORS: Sinyakov, Ye. V., and Dudnik, Ye. F. TITLE: Seignettoelectrical properties of SrNb 206-0.5 YbFeO PEHIODICAL: Fizika tverdogo tela, v- 4, no. 10, 1962, 2971 - 2972 TEXT: A new compound showing at the same time seignettoelectrical and ferrimagnetic properties was synthesizedi SrNb 206-0-5YbFeOY The temperature of preannealing was 1100 0C, that of final annealing 1270 OC. A proper choice of the final cooling rate is of great importance to ensure the desired properties in the ceramic. The seignettoelectrical state was verified by measuremer~ts of :-~(t) between -160 and +1600C and of 6(E) between 0 and 12 kv/cm, the magnetic properties by determining the initial magnetic permeubility at 7-8 Vc/sec. This was equal to 5 at room temperature. There are 2 figures. ASSOCIATION: Dnepropetrovskiy gosudarstvennyy universitet (Dnepropetrovsk State University) SUBMITTED: May 21, 1962 Card 1/1- '011 b 0 U1 1 113 /~ "' 1,!C'~'5/ 031 r ri Al -1 7,~'-'A Kolomoytsev, F. I., KodzheaDirov, F. F., Yakunin, Ya., and Sinyakov, Ye. V. ~77TLT-': Some Dossibilities of improving the quality of superhigh- frequency ferrites FE"RIODICAL: kkademiya nauk SSSR. Izvestiya- Seriya fizicheskaya, v. 25, no. 11 , 1961 , 1422-1426 T-EXT: Ferrites with the composition MgAl 0.3 Fe 1.704(Ref. 1: Smolenskiy G, A., Gurevich, A. G., Poluprovodniki v nauke i tekhnike (Semiconductors in science and engineering), v. II. Izd. AN SSSR, 195~; Refs. 2 and 3: see below) were examined. These ferrites were prepared from the oxides b.y the usual technique, namely, at different temperatures of preliminary annealinl- T pre and of final annealing T fin* Experiments showed that the ma-i--e'tization of a single formula unit of ferrite changes in the range of E74 F,",