Temperature-dependent magnetic force microscopy investigation of epitaxial MnAs films on GaAs(001)

被引：40

作者：

Plake, T ^{[1
]}

Hesjedal, T ^{[1
]}

Mohanty, J ^{[1
]}

Kästner, M ^{[1
]}

Däweritz, L ^{[1
]}

Ploog, KH ^{[1
]}

机构：

[1] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 14期

关键词：

D O I：

10.1063/1.1564642

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present variable-temperature magnetic force microscopy (VT-MFM) studies of epitaxially grown MnAs films on GaAs(001). Around a critical temperature of T-c=40 degreesC, the MnAs film undergoes a first order structural phase transition. Due to the strain involved, ferromagnetic alpha-MnAs and paramagnetic beta-MnAs phases coexist as stripes along MnAs[0001]. The dimensions of the alpha-phase change from isolated dots at higher temperatures to well ordered stripes at lower temperatures. VT-MFM allows a close look at the evolution of domain patterns of MnAs micromagnets. (C) 2003 American Institute of Physics.

引用

页码：2308 / 2310

页数：3

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