中国物理B ›› 2009, Vol. 18 ›› Issue (8): 3551-3554.doi: 10.1088/1674-1056/18/8/069

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

李国科, 张向群, 吴鸿业, 黄万国, 靳金玲, 孙阳, 成昭华   

  1. State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2009-04-14 修回日期:2009-04-20 出版日期:2009-08-20 发布日期:2009-08-20
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No 2009CB929201) and the National Natural Science Foundation of China (Grant No 10774179).

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

Li Guo-Ke(李国科), Zhang Xiang-Qun(张向群), Wu Hong-Ye(吴鸿业), Huang Wan-Guo(黄万国), Jin Jin-Ling(靳金玲), Sun Young(孙阳), and Cheng Zhao-Hua(成昭华)†   

  1. State Key Laboratory of Magnetism and Beijing National Laboratory of Condensed Matter Physics, Institute of Physicss, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2009-04-14 Revised:2009-04-20 Online:2009-08-20 Published:2009-08-20
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No 2009CB929201) and the National Natural Science Foundation of China (Grant No 10774179).

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摘要： A Fe doped rutile TiO2 single crystal is grown in an O2 atmosphere by the floating zone technique. Electron spin resonance (ESR) spectra clearly demonstrate that Fe3+ ions are substituted for the Ti4+ ions in the rutile TiO2 matrix. Magnetization measurements reveal that the Fe:TiO2 crystal shows paramagnetic behaviour in a temperature range from 5~K to 350~K. The Fe3+ ions possess weak magnetic anisotropy with an easy axis along the c axis. The annealed Fe:TiO2 crystal shows spin-glass-like behaviours due to the aggregation of the ferromagnetic clusters.

Abstract: A Fe doped rutile TiO2 single crystal is grown in an O2 atmosphere by the floating zone technique. Electron spin resonance (ESR) spectra clearly demonstrate that Fe3+ ions are substituted for the Ti4+ ions in the rutile TiO2 matrix. Magnetization measurements reveal that the Fe:TiO2 crystal shows paramagnetic behaviour in a temperature range from 5 K to 350 K. The Fe3+ ions possess weak magnetic anisotropy with an easy axis along the c axis. The annealed Fe:TiO2 crystal shows spin-glass-like behaviours due to the aggregation of the ferromagnetic clusters.

Key words: rutile, electron spin resonance, diluted magnetic semiconductors

中图分类号:  (Iron group (3d) ions and impurities (Ti-Cu))

  • 76.30.Fc
75.20.Ck (Nonmetals) 75.30.Gw (Magnetic anisotropy) 75.50.Pp (Magnetic semiconductors) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 81.10.Fq (Growth from melts; zone melting and refining)