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Title: Micromagnetism in a planar system with a random magnetic anisotropy and two-dimensional magnetic correlations

Abstract

The hysteresis loops and the micromagnetic structure of a ferromagnetic nanolayer with a randomly oriented local easy magnetization axis and two-dimensional magnetization correlations are studied using a micromagnetic simulation. The properties and the micromagnetic structure of the nanolayer are determined by the competition between the anisotropy and exchange energies and by the dipole–dipole interaction energy. The magnetic microstructure can be described as an ensemble of stochastic magnetic domains and topological magnetization defects. Dipole–dipole interaction suppresses the formation of topological magnetization defects. The topological defects in the magnetic microstructure can cause a sharper change in the coercive force with the crystallite size than that predicted by the random magnetic anisotropy model.

Authors:
 [1];  [2];  [1];  [3]
  1. Russian Academy of Sciences, Kirenskii Institute of Physics, Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch (Russian Federation)
  2. Reshetnev Siberian State Aerospace University (Russian Federation)
  3. Siberian Federal University (Russian Federation)
Publication Date:
OSTI Identifier:
22756360
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 125; Journal Issue: 2; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; COERCIVE FORCE; CORRELATIONS; MAGNETIZATION; MATRICES; STOCHASTIC PROCESSES; TWO-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL SYSTEMS

Citation Formats

Komogortsev, S. V., Fel’k, V. A., E-mail: vlaf@sibsau.ru, Iskhakov, R. S., and Shadrina, G. V. Micromagnetism in a planar system with a random magnetic anisotropy and two-dimensional magnetic correlations. United States: N. p., 2017. Web. doi:10.1134/S1063776117070196.
Komogortsev, S. V., Fel’k, V. A., E-mail: vlaf@sibsau.ru, Iskhakov, R. S., & Shadrina, G. V. Micromagnetism in a planar system with a random magnetic anisotropy and two-dimensional magnetic correlations. United States. doi:10.1134/S1063776117070196.
Komogortsev, S. V., Fel’k, V. A., E-mail: vlaf@sibsau.ru, Iskhakov, R. S., and Shadrina, G. V. Tue . "Micromagnetism in a planar system with a random magnetic anisotropy and two-dimensional magnetic correlations". United States. doi:10.1134/S1063776117070196.
@article{osti_22756360,
title = {Micromagnetism in a planar system with a random magnetic anisotropy and two-dimensional magnetic correlations},
author = {Komogortsev, S. V. and Fel’k, V. A., E-mail: vlaf@sibsau.ru and Iskhakov, R. S. and Shadrina, G. V.},
abstractNote = {The hysteresis loops and the micromagnetic structure of a ferromagnetic nanolayer with a randomly oriented local easy magnetization axis and two-dimensional magnetization correlations are studied using a micromagnetic simulation. The properties and the micromagnetic structure of the nanolayer are determined by the competition between the anisotropy and exchange energies and by the dipole–dipole interaction energy. The magnetic microstructure can be described as an ensemble of stochastic magnetic domains and topological magnetization defects. Dipole–dipole interaction suppresses the formation of topological magnetization defects. The topological defects in the magnetic microstructure can cause a sharper change in the coercive force with the crystallite size than that predicted by the random magnetic anisotropy model.},
doi = {10.1134/S1063776117070196},
journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 2,
volume = 125,
place = {United States},
year = {2017},
month = {8}
}