Magnetization reversal of thin ferromagnetic elements with surface anisotropy

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:453

Article

Usov, N. A.^1,2  Serebryakova, O. N.^1,2 

[1] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia

[2] Russian Acad Sci, Pushkov Inst Terr Magnetism Ionosphere & Radio Wa, Moscow 108480, Russia

关键词: Thin ferromagnetic elements;    Surface magnetic anisotropy;    Buckling nucleation mode;    Numerical simulation;   

DOI  :  10.1016/j.jmmm.2018.01.009

来源: Elsevier

【 摘 要 】

The magnetization reversal process in thin-film ferromagnetic elements with surface anisotropy of various shapes and sizes is investigated by means of numerical simulation. The dependencies of the perpendicular and in-plane hysteresis loops on the element thickness, and the value of the surface anisotropy constant are obtained. For sufficiently large values of the surface anisotropy constant the magnetization reversal of thin-film elements is shown to occur due to the nucleation of the buckling mode. For an elongated rectangular element the nucleation field of the buckling mode is proportional to the absolute value of the surface anisotropy constant, and inversely proportional to the element thickness. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

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