Direct observation of magnetization reversal of epitaxial MnAs films

被引：5

作者：

Manago, Takashi ^{[1
]}

Akinaga, Hiro ^{[1
]}

机构：

[1] Natl Inst AIST, NRI, Res Consortium Synthet Nanofunct Mat Project, SYNAF, Tsukuba, Ibaraki 3058568, Japan

来源：

SURFACE SCIENCE | 2006年 / 600卷 / 17期

关键词：

alloy; gallium arsenide; magnetic measurements; single crystal surfaces; magnetic films; magnetic surface; manganese arsenide; magnetic force microscopy; magneto-optical Kerr effect;

D O I：

10.1016/j.susc.2006.07.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The magnetization reversal of MnAs ((1) over bar 100) epitaxial films on GaAs (0 0 1) substrates was investigated using a Kerr microscope. The direct observation of the change in domain structure under magnetic fields revealed characteristic magnetization reversal process of MnAs films with a ladder-type domain structure. The nucleus of the magnetization reversal region appears and propagates to neighboring alpha-MnAs lines, and then the ladder-type structures cover all over the surface. Finally the domain wall displacement occurs to expand the domain. The change in magnetic domain reflects the characteristic ridge/groove structures of MnAs films. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：3492 / 3495

页数：4

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