Dynamical Magnetoelectric Coupling in Multiferroic BiFeO3

被引：0
|
作者：
J. A. Bartkowska
机构：
[1] Silesian University,Department of Materials Science, Faculty of Computer Science and Material Science
来源：
International Journal of Thermophysics | 2011年 / 32卷
关键词：
Magnetoelectric coupling; Magnons; Multiferroics; Spin wave; Spiral magnetic ordering;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, the magnon excitations in multiferroic BiFeO3 (BFO) have been discussed. The studies are based on the spin wave theory and Katsura’s model. The influence of the spin wave excitations on the terahertz absorption is discussed. The antiferromagnetic and ferroelectric interactions in multiferroic BFO were included using an effective fermion Hamiltonian. This Hamiltonian is bosonized and diagonalized, using Holstein–Primakoff and Bogoliubov transformations, respectively. An effective boson Hamiltonian is diagonalized to determine the excitation energy of the spin wave. The results obtained in this study are in qualitative agreement with the experimental data.
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收藏
页码：739 / 745
页数：6
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