学术探索
学术期刊
新闻热点
数据分析
智能评审

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
收藏
页数：3
相关论文
共 12 条
[1]   Magneto-optical properties and the potential application of GaAs with magnetic MnAs nanoclusters [J].
Akinaga, H ;
Miyanishi, S ;
Tanaka, K ;
Van Roy, W ;
Onodera, K .
APPLIED PHYSICS LETTERS, 2000, 76 (01) :97-99
[2]  
DeBoeck J, 1996, APPL PHYS LETT, V68, P2744, DOI 10.1063/1.115584
[3]  
MASSALSKI TB, 1990, BINARY ALLOY PHASE D, V1, P295
[4]  
MIRA J, 2002, CONDMAT0201478
[5]   Correlation of structure and magnetism in GaAs with embedded Mn(Ga)As magnetic nanoclusters [J].
Moreno, M ;
Trampert, A ;
Jenichen, B ;
Däweritz, L ;
Ploog, KH .
JOURNAL OF APPLIED PHYSICS, 2002, 92 (08) :4672-4677
[6]   First-principles calculations of electronic structures of diluted magnetic semiconductors (Ga,Mn)As [J].
Ogawa, T ;
Shirai, M ;
Suzuki, N ;
Kitagawa, I .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 :428-429
[7]   (Ga,Mn)As: A new diluted magnetic semiconductor based on GaAs [J].
Ohno, H ;
Shen, A ;
Matsukura, F ;
Oiwa, A ;
Endo, A ;
Katsumoto, S ;
Iye, Y .
APPLIED PHYSICS LETTERS, 1996, 69 (03) :363-365
[8]   Fabrication, magnetic properties, and electronic structures of nanoscale zinc-blende MnAs dots (invited) [J].
Ono, K ;
Okabayashi, J ;
Mizuguchi, M ;
Oshima, M ;
Fujimori, A ;
Akinaga, H .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8088-8092
[9]   Ground state of half-metallic zinc-blende MnAs [J].
Sanvito, S ;
Hill, NA .
PHYSICAL REVIEW B, 2000, 62 (23) :15553-15560
[10]   Magneto-optical properties of a GaAs:MnAs hybrid structure sandwiched by GaAs/AlAs distributed Bragg reflectors:: Enhanced magneto-optical effect and theoretical analysis [J].
Shimizu, H ;
Miyamura, M ;
Tanaka, M .
APPLIED PHYSICS LETTERS, 2001, 78 (11) :1523-1525
12