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Investigation of Magneto-Optical Properties of Diluted Magnetic Semiconductor Superlattice and Magnetic Garnet Films with the In-plane Magnetization

面内磁化研究稀磁半导体超晶格和磁性石榴石薄膜的磁光性质

基本信息

批准号：
01550255
负责人：
IMAMURA Masaaki
金额：
$ 1.41万
依托单位：
Fukuoka Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

The first year (1989) :The aim of this year was to investigate the growth condition of CdMnTe epitaxial films or CdMnTe-CdTe superlattice films on (0001) sapphire substrates using a molecular beam epitaxial method. As the result of epitaxy of those films, we have confirmed by the measurements of x-ray diffraction and UV transparency, and RHEED observations that the good quality films can be obtained using the employed method.The second year (1990) :The aim of this year was to investigate the magneto-optical properties with respect to the epitaxial films obtained. It was confirmed that by the substitution of Cd by Mn in Cd_<1-x>Mn_xTe films the absorption edge which exhibits at 800 nm in the CdTe films shifts from the long wavelength side to the short one by about 50 nm (0.1 eV) per a molar ratio x of 0.1. As to the Faraday rotation, -0.1 deg/cm/gauss in a films with x=0.1 and -2.5deg/cm/gauss in that of x=0.3 could be obtained at a wavelength of 0.6 m. These values are comparatively large, comparing with values which have been reported so far. We are going to develop these characteristics furthermore. Those results have been reported at the 14th annual conference on Magnetics and in Rep. Elec. Res. Lab. Vol. 6 1990.As to the magneto-optical properties of Magnetic garnet epitaxial films, it has been made clear that the large reciprocal effect is observed and these results have been reported in IEICE Technical Report OQE89-124.

第一年（1989年）：本年度的目标是研究用分子束外延法在（0001）蓝宝石衬底上生长CdMnTe外延膜或CdMnTe-CdTe超晶格膜的条件。作为这些薄膜的外延的结果，我们已经证实，通过测量的X射线衍射和紫外线的透明度，和RHEED的意见，可以得到良好的质量的薄膜，使用所采用的方法。第二年（1990年）：今年的目的是调查的磁光性能相对于所获得的外延薄膜。证实了通过在Cd_ Mn_xTe膜中用Mn取代Cd<1-x>，CdTe膜中在800 nm处表现出的吸收边从长波长侧向短波长侧移动约50 nm（0.1 eV），每摩尔比x为0.1。对于法拉第旋光，在0.6 m波长下，x=0.1的α膜的旋光为-0.1 deg/cm/高斯，x=0.3的α膜的旋光为-2.5 deg/cm/高斯。与迄今为止报告的数值相比，这些数值相对较大。我们将进一步发展这些特性。这些结果已在第14届磁性年会和美国众议员Elec上报告。研究实验室关于磁性石榴石外延膜的磁光性质，已经清楚地观察到大的互易效应，并且这些结果已经在IEICE技术报告OQE 89 -124中报道。