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.
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Funding
This work was supported by the Russian Federation Presidential Council for Grants, project no. MK-1422.2020.2.
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Translated by E. Chernokozhin
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Tsiberkin, K.B. Wave Dynamics of Magnetization of a Ferromagnetic Impurity in a Paramagnetic Matrix. Phys. Metals Metallogr. 122, 358–361 (2021). https://doi.org/10.1134/S0031918X21040116
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DOI: https://doi.org/10.1134/S0031918X21040116