Mixed magnetic phases in (Ga,Mn)As epilayers

被引：44

作者：

Hamaya, K

Taniyama, T

Kitamoto, Y

Fujii, T

Yamazaki, Y

机构：

[1] Tokyo Inst Technol, Dept Innovat & Engineered Mat, Midori Ku, Yokohama, Kanagawa 2268502, Japan

[2] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.94.147203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Two different ferromagnetic-paramagnetic transitions are detected in (Ga,Mn)As/GaAs(001) epilayers from ac susceptibility measurements: transition at a higher temperature results from (Ga,Mn)As cluster phases with [110] uniaxial anisotropy and that at a lower temperature is associated with a ferromagnetic (Ga,Mn)As matrix with < 100 > cubic anisotropy. A change in the magnetic easy axis from [100] to [110] with increasing temperature can be explained by the reduced contribution of < 100 > cubic anisotropy to the magnetic properties above the transition temperature of the (Ga,Mn)As matrix.

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页数：4

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