Zinc-blende-type MnAs nanoclusters embedded in GaAs

被引：99

作者：

Yokoyama, M

Yamaguchi, H

Ogawa, T

Tanaka, M

机构：

[1] Univ Tokyo, Dept Elect Engn, Bunkyo Ku, Tokyo 1138656, Japan

[2] PRESTO, Japan Sci & Technol Agcy, Kawaguchi, Saitama 3320012, Japan

[3] Tohoku Univ, Dept Elect Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[4] Univ Tokyo, Dept Elect Engn, Bunkyo Ku, Tokyo 1158656, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 10期

关键词：

D O I：

10.1063/1.1852214

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Structural, magnetic, and magneto-optical properties of GaAs:MnAs granular thin films have been investigated. Zinc-blende(ZB)-type MnAs clusters were found to be formed by annealing GaAs:MnAs at 500 degrees C with a ramp rate of 5 degrees C/min under a nitrogen atmosphere. Magnetic and magneto-optical properties of this GaAs:MnAs granular material with ZB-type MnAs clusters were different from those of the GaAs:MnAs with NiAs-type hexagonal MnAs clusters. The ferromagnetic transition temperature T-C of the GaAs:MnAs of ZB type is estimated to be 360 K, which is higher than T-C (=313 K) of the NiAs-type hexagonal MnAs. (c) 2005 American Institute of Physics.

引用

页数：3

共 12 条

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