Room-temperature ferromagnetism in (Mn, N)-codoped TiO2 films grown by plasma assisted molecular beam epitaxy

被引:11
|
作者
Li, X. Y. [1 ]
Wu, S. X. [1 ]
Xu, L. M. [1 ]
Liu, Y. J. [1 ]
Xing, X. J. [1 ]
Li, S. W. [1 ]
机构
[1] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1063/1.3006135
中图分类号
O59 [应用物理学];
学科分类号
摘要
(Mn, N)-codoped TiO2 films have been fabricated by plasma assisted molecular beam epitaxy. X-ray diffraction and x-ray photoelectron spectroscopy studies indicate the incorporation of both Mn and N ions into the TiO2 lattice but without Mn metal clusters. Ferromagnetism with clear hysteresis at 300 K is observed in (Mn, N)-codoped TiO2 films, whereas the films without nitrogen show paramagnetic behavior. It is demonstrated experimentally that the intentional nitrogen doping plays an important role in realizing dominant ferromagnetic ordering in Mn-doped TiO2 films. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3006135]
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页数:3
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