Electron spin resonance investigation of the substitution of Fe3^＋ for Ti4^＋ ions in rutile TiO2 single crystal 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Electron spin resonance investigation of the substitution of Fe3^＋ for Ti4^＋ ions in rutile TiO2 single crystal

作者姓名：	李国科张向群吴鸿业黄万国靳金玲孙阳成昭华

作者单位：	State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China;State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China;State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China;State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China;State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China;State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China;State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China

基金项目：	Project supported by the National Basic Research Program of China (Grant No 2009CB929201) and the National Natural Science Foundation of China (Grant No 10774179).

摘要：	A Fe doped rutile TiO 2 single crystal is grown in an O 2 atmosphere by the floating zone technique.Electron spin resonance (ESR) spectra clearly demonstrate that Fe 3+ ions are substituted for the Ti 4+ ions in the rutile TiO 2 matrix.Magnetization measurements reveal that the Fe:TiO 2 crystal shows paramagnetic behaviour in a temperature range from 5 K to 350 K.The Fe 3+ ions possess weak magnetic anisotropy with an easy axis along the c axis.The annealed Fe:TiO 2 crystal shows spin-glass-like behaviours due to the aggregation of the ferromagnetic clusters.
关键词：	rutile electron spin resonance diluted magnetic semiconductors
收稿时间：	2009-04-14
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