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1Кристаллическая Структура И Магнитные Свойства Композитных Мультиферроиков

М. А. Сёмкин, А. Е. Суслопарова,Т. С. Карпова, А. П. Носов, А. Н. Пирогов

2016

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2Crystal and Magnetic State of Multiferroic Composites (x)mfe2o4 + (1-X)batio3, M = Ni, Co

Alexander Pavlovich Nosov,M. A. Semkin,А. Е. Teplykh,С. Г. Богданов,N. V. Urusova,Yu. N. Skryabin,А. Н. Пирогов, V. G. Vasiliev,E. V. Vladimirova,Т. С. Карпова

Multiferroic composites of ( x )NiFe 2 O 4 + (1- x )BaTiO 3 with x = 0.2, 0.3 and 0.4 and ( x )CoFe 2 O 4 + (1- x )BaTiO 3 with x = 0.2, and 0.4 have been synthesized by mixing NiFe 2 O 4 (CoFe 2 O 4 ) spinel and BaTiO 3 piezoelectric. Distribution of Ni (Co) ions on 8 a and 16 d positions of spinel lattice (space group F d -3 m ) is determined by neutron powder diffraction. Wave vector of magnetic structure of the spinel is k = 0. The dielectric permittivity of the composites was measured for the frequency range 10 2 – 10 5 Hz. At low frequencies the dielectric permittivity decreased from ~940 for x = 0.2 to ~360 for 0.4.

2015Diffusion and defect data, solid state data Part B, Solid state phenomena/Solid state phenomena（2015）

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3Influence of sodium chloride barrier on the size and particle morphology of synthesized cobalt oxide

A.Sh. Khaliullina, V.G. Vassil'ev,E.V. Vladimirova, V.I. Pastukhove,T.S. Karpova,E.S. Gerasimova

Powders of cobalt oxide consisting from different size and morphology particles have been obtained by methods of thermal hydrolysis, thermal hydrolysis with sodium chloride as a barrier and thermal decomposition of cobalt oxalate. The size and morphology of the particles in obtained powders were investigated to the dependence of synthesis method.

2014Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов（2014）

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4OBTAINING METAL COVERINGS AND THEIR PROPERTIES STUDYING

Е.S. Gerasimova,Е.V. Vladimirova, В.G. Vasilyev,Т.S. Karpova, A.Sh. Haliullina

Properties of metals films (Cu, Fe, Ni, Co) obtained by thermohydrolysis in the recovery atmosphere on different bases are studied.

2014Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов（2014）

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5Пирогидролизный Синтез Сплава Железо–кобальт

Е. В. Владимирова,В. Г. Васильев,А. П. Носов,Т. С. Карпова,В. Г. Бамбуров

2013Доклады Академии наук（2013）引用：23

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6Pyrohydrolysis Synthesis of an Iron-Cobalt Alloy

E. V. Vladimirova,V. G. Vasil’ev,A. P. Nosov,T. S. Karpova,V. G. Bamburov

2013Doklady Physics（2013）

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7Synthesis of Ferrite Spinel NiFe2O4 by Thermal Hydrolysis and Its Magnetic Properties

T. S. Karpova,V. G. Vasil’ev,E. V. Vladimirova,A. P. Nosov

A new thermal hydrolysis technique is proposed for synthesis of complex oxide ferrite spinels with the general formula MFe2O4, where M = Ni, Co, Cu, Mn, Zn, etc. The structural, morphological, and magnetic properties of powdered nickel ferrite NiFe2O4 obtained by the proposed technique are investigated.

2012Inorganic Materials Applied Research（2012）引用：6

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8Low Temperature Synthesis of the Xbisco3-(1-х)batio3, X=0÷0.03 Ferroelectric System

Tatyana Karpova, Victor Vassil’ev, Elena Vladimirova,Vladimir Shur,Vera Shikhova,Vladimir Osotov, Alexander Nosov

The ferroelectric ceramic of the xBiScO3-(1-Ñ )BaTiO3, x=0Ã·0.03 system was prepared by solid state reaction synthesis at temperatures below 850â. Solid solutions with tetragonal symmetry were formed. Doping with BiScO3 resulted in linear increase with x the unit cell parameters, maximum temperature of the dielectric constant and its maximum value. Room temperature measurements of ferroelectric properties revealed more complicated behavior on doping with optimum combination of ferroelectric properties for composition with x = 0.015.

2012American Journal of Materials Science（2012）

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9ВЛИЯНИЕ МЕТОДА СИНТЕЗА НА МАГНИТОСТРИКЦИОННЫЕ СВОЙСТВА ФЕРРОШПИНЕЛИ COFE2O4

В. Г. Васильев, Е. В. Владимирова,Т. С. Карпова, А. П. Носов

Исследование посвящено вопросам взаимосвязи методов синтеза и магнитострикционных свойств ферритовых материалов. Феррошпинель CoFe2O4 синтезирована тремя различными методиками: методом твердофазных реакций, методом термогидролиза, золь-гель-методом. Показано влияние метода синтеза на магнитострикционные свойства феррошпинели.

2011Известия Российской академии наук Серия физическая

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10Thermal Hydrolysis As a New Method of Synthesis of the CoFe2O4 Spinel Ferrite

T. S. Karpova,V. G. Vasil’ev,E. V. Vladimirova,A. P. Nosov

A new method has been proposed for synthesizing spinel ferrites, i.e., thermal hydrolysis, which makes it possible to obtain a single-phase product of high purity for a short time. A polycrystalline sample of the CoFe2O4 composition has been prepared. The phase composition and morphology of the sample have been investigated and its crystal structure has been refined. The static magnetic characteristics have been measured.

2011Glass Physics and Chemistry（2011）引用：3

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11Effect of Synthesis on the Magnetostrictive Properties of CoFe2O4 Spinel Ferrite

T. S. Karpova, V. G. Vasilyev,E. V. Vladimirova,A. P. Nosov

The correlation between methods of synthesis and magnetostrictive properties of ferrite materials is investigated. CoFe2O4 spinel ferrite was synthesized using three techniques: solid-phase reactions, thermal hydrolysis, and sol-gel. The effect of the method of synthesis on the magnetostrictive properties of spinel ferrite is demonstrated.

2011Bulletin of the Russian Academy of Sciences Physics（2011）引用：5

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