This article is cited in 5 papers

Metals

Stable states of magnetic inhomogeneities localized in the region of defects

R. M. Vakhitov, E. B. Magadeev, A. R. Yumaguzin, R. V. Solonetskii

Bashkir State University, Ufa

Abstract: The topology and conditions of nucleation of magnetic inhomogeneities at defects of a uniaxial ferromagnet have been investigated theoretically. It has been shown that, for specific material parameters, two types of inhomogeneities corresponding to a 0-degree domain wall, which differ in the size, amplitude, and energy, can arise at defects. It has been found that the large-amplitude inhomogeneity is a metastable formation. However, with inclusion of demagnetizing fields of the sample, it can become stable, i.e., energetically more favorable in comparison with the small-amplitude inhomogeneity. The possible contribution from this inhomogeneity to the static and dynamic processes of magnetization reversal of magnetic materials has been considered.

Received: 25.02.2015

 English version: Physics of the Solid State, 2015, 57:8, 1488–1493

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