Magnetization of epitaxial MnGe alloys on Ge(111) substrates

被引：32
|
作者：
Gunnella, R
Morresi, L
Pinto, N
Murri, R
Ottaviano, L
Passacantando, M
D'Orazio, F
Lucari, F
机构：
[1] Univ Camerino, Dipartimento Fis, Unita INFM, I-62032 Camerino, Italy
[2] Univ Aquila, Unita INFM, Lab Reg CASTI, Dipartimento Fis, I-67100 Laquila, Italy
来源：
SURFACE SCIENCE | 2005年 / 577卷 / 01期
关键词：
magnetic semiconductors; magnetic force microscopy; magnetic films;
D O I：
10.1016/j.susc.2004.12.021
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 structural and magnetic properties of an Mn rich solid phase epitaxy MnxGe1-x alloy grown on a clean 2 x 8-Ge(111) surface, with a Curie temperature of about 300 K are investigated. Magneto-optical Kerr effect infers the existence of in-plane easy magnetization direction. We describe the epitaxial registry condition, the room temperature-zero field magnetic structure observed by magnetic force microscopy and the magneto-optical properties. The observations are consistent with the formation of epitaxial Mn5Ge3 alloy, with a modulated magnetic structure characterized by asymmetric 180degrees Bloch walls consisting of a vortex-like configuration of the local magnetization. (C) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：22 / 30
页数：9
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