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
收藏
页码：126 / 132
页数：7
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