Abstract

Derivation and analysis of equations for magnetization dynamics of a dilute magnetic composite obtained by introducing ferromagnetic ions into a paramagnetic conductive matrix are presented in this work. Impurity ions are bound with each other by indirect exchange interaction and, with the matrix, by dipole interaction. The system is placed in a uniform dc magnetic field. The conditions for the existence of traveling waves of magnetization of the ferromagnetic subsystem are found. The minimum wavelength is determined by the concentration of impurity ions and the average energy of indirect exchange interaction. If its sign is positive, the realization of traveling magnetization waves in a wide range of parameters is possible. If the antiferromagnetic character of the binding of impurity ions is dominant, the wave solutions become unstable.

中文翻译：

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顺磁基体中铁磁杂质磁化的波动动力学

摘要

本文介绍了通过将铁磁离子引入顺磁导电基质中获得的稀磁性复合材料的磁化动力学方程的推导和分析。杂质离子通过间接交换相互作用相互结合，并通过偶极相互作用与基质结合。该系统被放置在一个均匀的直流磁场中。找到了铁磁子系统磁化行波存在的条件。最小波长由杂质离子的浓度和间接交换相互作用的平均能量决定。如果其符号为正，则可以实现宽参数范围内的行磁化波。如果杂质离子结合的反铁磁特性占主导地位，波解就会变得不稳定。