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Your search keyword '"Lenkevich, D. A."' showing total 9 results
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9 results on '"Lenkevich, D. A."'

2. Influence of the structure defects on the magnetic properties of the FePt/Fe bilayer

Author

Plotnikova, E. M., Trushkin, I. I., Lenkevich, D. A., Kotelnikov, A. L., Cockburn, A., and Zvezdin, K. A.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

Thin magnetic multilayered films containing FePt have attracted a lot of attention recently due to their possible usage in ultra-high density magnetic storage. Although structure defects play a dramatic role in the magnetization process and influence magnetic properties in general this dependence haven't been studied thoroughly. The main aim of this work was to perform theoretical investigation of the magnetic properties of FePt and Fe/FePt thin films with high coercivity with respect to the structure defects such as anisotropy constant, magnetization saturation, exchange constant fluctuations and easy axis deviation. For selected defect patterns the coercive field dependence on layer thicknesses was analysed. Numerical study of the bilayer with hard magnetic layer having the planar anisotropy was carried on using micromagnetic calculations. Values of layers thickness have been found optimal for perspective applications, the dependence of the hysteresis loop shape upon the magnetization process has been shown and analysed., Comment: 9 pages, 4 figures

Published
2013
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8. Influence of the structure defects on the magnetic properties of the FePt/Fe bilayer.

Author

Plotnikova, E. M., Trushkin, I. I., Lenkevich, D. A., Kotelnikov, A. L., Cockburn, A., and Zvezdin, K. A.

Subjects
MAGNETIC properties, FERROMAGNETISM, MAGNETIZATION, ELECTROMAGNETIC induction, PROPERTIES of matter
Abstract

Thin magnetic multilayered films containing FePt have attracted a lot of attention recently due to their possible usage in ultra-high density magnetic storage. Although structure defects play a dramatic role in the magnetization process and influence magnetic properties in general this dependence have not been studied thoroughly. The main aim of this work was to perform theoretical investigation of the magnetic properties of FePt and Fe/FePt thin films with high coercivity with respect to the structure defects such as anisotropy constant, magnetization saturation, exchange constant fluctuations, and easy axis deviation. For selected defect patterns, the coercive field dependence on layer thicknesses was analysed. Numerical study of the bilayer with hard magnetic layer having the planar anisotropy was carried on using micromagnetic calculations. Values of layers thickness have been found optimal for perspective applications, the dependence of the hysteresis loop shape upon the magnetization process has been shown and analysed. © 2014 AIP Publishing LLC. [ABSTRACT FROM AUTHOR]

Published
2014
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9. Study of an interaction of a blast wave with a destructible screen made of a granular material.

Author

Kotel'nikov, A., Mirova, O., Golub, V., Bazhenova, T., and Lenkevich, D.

Subjects
BLAST waves, SHOCK waves, ATTENUATION coefficients, GRANULAR materials, AERODYNAMICS
Abstract

The results of an experimental study of three cases of the interaction of a shock wave with screens made of an easily destructible material are given. The dependence of the coefficient of attenuation on the thickness and location of the screen is obtained. [ABSTRACT FROM AUTHOR]

Published
2014
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