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Your search keyword '"Savenko, B.N."' showing total 35 results
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35 results on '"Savenko, B.N."'

22. INVESTIGATION OF CRYSTAL AND MAGNETIC STRUCTURE OF SPINEL FERRITES UNDER HIGH PRESSURE

Author

Belozerova, N.M., Kichanov, S.E., Kozlenko, D.P., Lukin, E.V., and Savenko, B.N.

Subjects
Condensed Matter::Materials Science, Condensed Matter::Strongly Correlated Electrons, Condensed Matter::Disordered Systems and Neural Networks
Abstract

A study of spinel ferrites is great importance regarding their interesting structural and magnetic properties having both fundamental and applied interest [1]. In particular, the canted antiferromagnetic, ferrimagnetic, spin glass and semi-spin glass states can be realized in these compounds [2].

Published
2021
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26. Structural, magnetic and electronic properties of Ti-doped BaFeO3- exhibiting colossal dielectric permittivity

Author

Dang, N.T., primary, Kozlenko, D.P., additional, Tran, N., additional, Lee, B.W., additional, Phan, T.L., additional, Madhogaria, R.P., additional, Kalappattil, V., additional, Yang, D.S., additional, Kichanov, S.E., additional, Lukin, E.V., additional, Savenko, B.N., additional, Czarnecki, P., additional, Tran, T.A., additional, Vo, V.L., additional, Thao, L.T.P., additional, Khan, D.T., additional, Tuan, N.Q., additional, Jabarov, S.H., additional, and Phan, M.H., additional

Published
2019
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28. Pressure effect on magnetic susceptibility of LaCoO₃

Author

Panfilov, A.S., Grechnev, G.E., Zhuravleva, I.P., Lyogenkaya, A.A., Pashchenko, V.A., Savenko, B.N., Novoselov, D., Prabhakaran, D., and Troyanchuk, I.O.

Subjects
Низкотемпеpатуpный магнетизм
Abstract

The effect of pressure on magnetic properties of LaCoO₃ is studied experimentally and theoretically. The pressure dependence of magnetic susceptibility χ of LaCoO₃ is obtained by precise measurements of χ as a function of the hydrostatic pressure P up to 2 kbar in the temperature range from 78 K to 300 K. A pronounced magnitude of the pressure effect is found to be negative in sign and strongly temperature dependent. The obtained experimental data are analysed by using a two-level model and DFT+U calculations of the electronic structure of LaCoO₃ . In particular, the fixed spin moment method was employed to obtain a volume dependence of the total energy difference Δ between the low spin and the intermediate spin states of LaCoO₃ . Analysis of the obtained experimental χ(P) dependence within the two-level model, as well as our DFT+U calculations, have revealed the anomalous large decrease in the energy difference Δ with increasing of the unit cell volume. This effect, taking into account a thermal expansion, can be responsible for the temperatures dependence of Δ, predicting its vanishing near room temperature.

Published
2018

35. Magnetic and transport properties of Ca1.5La0.5FeMo1−xWxO6 perovskites.

Author

Burzo, E., Balasz, I., Valeanu, M., Kozlenko, D.P., Kichanov, S.E., Rutkauskas, A.V., and Savenko, B.N.

Subjects
*CALCIUM compounds, *TRANSPORT properties of metal, *MAGNETIC properties of metals, *PEROVSKITE, *METAL crystal growth, *MAGNETIZATION
Abstract

The Ca 1.5 La 0.5 FeMo 1 − x W x O 6 double perovskites with x ⩽ 0.3 crystallize in a monoclinic structure having space group P2 1 /n. The degree of crystallographic ordering is increased as the tungsten content is higher. As a result, there is an increase of both saturation magnetizations and Curie temperatures. The magnetic susceptibilities follow temperature dependences typical for a ferrimagnetic system. The valence states of iron and molybdenum ions as well their distributions in the lattice sites were determined. These data were correlated with magnetic and transport properties. [ABSTRACT FROM AUTHOR]

Published
2015
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