Magnetic Properties of Heteroepitaxial MnAs Thin Films and Their Post-growth Annealing Effects

被引：0

作者：

Song, J. H. ^{[1
]}

Ketterson, J. B. ^{[2
,3
]}

机构：

[1] Chungnam Natl Univ, Dept Phys, Daejeon 305764, South Korea

[2] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

[3] Northwestern Univ, Mat Res Ctr, Evanston, IL 60208 USA

来源：

JOURNAL OF THE KOREAN MAGNETICS SOCIETY | 2009年 / 19卷 / 04期

关键词：

MnAs; spin polarization; spin injection; ferromagnetism;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied physical properties of MnAs thin films grown by Molecular-Beam Epitaxy as well as their postgrowth annealing effects. The samples grown at 600 degrees C show the preferred crystal orientation of type-B independent of substrate whereas type-A is observed for the samples grown at below 200 degrees C. The sample grown at 600 degrees C on GaAs(001) substrate is magnetized to only one direction even on the easy axis of magnetization. The magnetic properties are vastly enhanced after post- growth annealing for both MnAs/Si(001) sample with no ferromagnetism and ferromagnetic MnAs/GaAs(001) grown at 200 degrees C.

引用

页码：126 / 132

页数：7

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