Magneto-optical Properties of Bi-substituted Yttrium Iron Garnet Films by Metal-organic Decomposition Method

被引：31
作者：
Ishibashi, Takayuki [1 ]
Kosaka, Terumasa [1 ]
Naganuma, Masayuki [1 ]
Nomura, Tatsuo
机构：
[1] Nagaoka Univ Technol, Niigata 9402188, Japan
来源：
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) | 2010年 / 200卷
关键词：
FARADAY-ROTATION; THIN-FILMS; BISMUTH;
D O I：
10.1088/1742-6596/200/11/112002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Recently, Bi-substituted yttrium iron garnet has been used as an indicator that visualizes magnetic flux distribution utilizing magneto-optical (MO) effect. In order to improve the sensitivity and the spatial resolution in the MO imaging, higher Bi substitution and thinness less than 1 mu m are required. For the purpose, Y3-xBixFe5O12 (Bi:YIG) films with high Bi substitution of x=1.0 - 2.5 were obtained on Gd3Ga5O12 (111) substrates by metal-organic decomposition method in this study. Magneto-optical spectra were measured for all samples, and Faraday rotation was found to be 1.55 x 10(5) degree/cm at wavelength of 524 nm for x = 2.5 film. For the spatial resolution, magnetic recording marks with a length of 0.6 mu m was clearly resolved by using 200 nm-thick Bi: YIG with x = 2.5.
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页数：4
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