Magnetism

Dynamics of magnetization reversal of double-row magnetic moment arrays

A. M. Shutyi, D. I. Sementsov

Ulyanovsk State University

Abstract: Double-row magnetic moment arrays coupled by dipole–dipole and exchange interactions have been studied. The processes of system excitation by a local external field affecting a fraction of magnetic moments have been considered; the conditions of partial and complete magnetization reversal of the system have been investigated. It has been shown that excitation of even two magnetic moments can cause magnetization reversal of the entire array. It has been revealed that the interface between oppositely oriented array regions can have both zero and nonzero total magnetic moments, depending on the exchange interaction parameter. The interdomain wall displacement due to the external magnetic field affecting the entire system has been considered.

Received: 20.10.2014

 English version: Physics of the Solid State, 2015, 57:4, 709–716

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