Intrinsic Faraday spectra of ferromagnetic rutile Ti1−xCoxO2−δ
Intrinsic Faraday spectra of ferromagnetic rutile Ti1−xCoxO2−δ
复制标题
铁磁金红石 Ti1−xCoxO2−δ 的本征法拉第光谱
DOI：
10.1063/1.2213517
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发表时间：
2006
影响因子：
4
通讯作者：
T. Hasegawa
中科院分区：
文献类型：
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作者：
Y. Hirose;T. Hitosugi;Y. Furubayashi;G. Kinoda;K. Inaba;T. Shimada;T. Hasegawa
我们研究了在 Al2O3 (0001) 上生长的铁磁金红石 Ti1−xCoxO2−δ 薄膜的法拉第光谱。法拉第光谱强烈依赖于薄膜厚度，揭示了光的多次反射的显着影响。基于光学模型对金红石 Ti1−xCoxO2−δ 的多重反射效应的本征法拉第光谱进行了校正，并与吸收光谱进行了详细比较。本征法拉第椭圆率和光带边缘之间的定量良好对应关系强烈表明金红石 Ti1−xCoxO2−δ 是一种本征铁磁半导体。交换参数 N0α 和 N0β 估计为~0.1eV 量级。
We have investigated the Faraday spectra of ferromagnetic rutile Ti1−xCoxO2−δ films grown on Al2O3 (0001). The Faraday spectra strongly depended on the film thickness, revealing the significant effect of the multiple reflections of light. The intrinsic Faraday spectra of rutile Ti1−xCoxO2−δ were corrected for this multiple reflection effect on the basis of an optical model and compared with the absorption spectra in detail. The quantitatively good correspondence between intrinsic Faraday ellipticity and optical band edge strongly suggests that rutile Ti1−xCoxO2−δ is an intrinsic ferromagnetic semiconductor. The exchange parameters, N0α and N0β, were estimated as the order of ∼0.1eV.
DOI：
10.1143/jjap.42.l105
发表时间：
2003-02-01
期刊：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
影响因子：
--
作者：
Fukumura, T;Yamada, Y;Kawasaki, M
通讯作者：
Kawasaki, M