Oxygen vacancy effect on room-temperature ferromagnetism of rutile Co:TiO2 thin films
Yan, WS; Sun, ZH; Pan, ZY; Liu, QH; Yao, T; Wu, ZY; Song, C; Zeng, F; Xie, YN; Hu, TD; Wei, SQ; 谢亚宁,胡天斗
刊名APPLIED PHYSICS LETTERS
2009
卷号94期号:4页码:42508
关键词ab initio calculations annealing cobalt electronic structure ferromagnetic materials impurity states magnetic thin films semimagnetic semiconductors titanium compounds XANES
学科分类Physics
DOI10.1063/1.3075844
通讯作者[Yan, Wensheng ; Sun, Zhihu ; Pan, Zhiyun ; Liu, Qinghua ; Yao, Tao ; Wu, Ziyu ; Wei, Shiqiang] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China ; [Song, Cheng ; Zeng, Fei] Tsinghua Univ, Adv Mat Lab, Dept Mat Sci & Engn, Beijing 100084, Peoples R China ; [Xie, Yaning ; Hu, Tiandou] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
文章类型Article
英文摘要The x-ray absorption near edge structure spectroscopy and first-principles calculations were combined to study the local and electronic structures of rutile Co:TiO2 thin film with room-temperature ferromagnetism. It was revealed that the Co(Ti)2+ substituting the Ti site forms Co(Ti)p 2+-V-O complex with the O vacancy generated in the annealing process. The O vacancy induces a spin-split donor impurity band with a t(2g) character within the gap region. We proposed that the strong exchange interaction between the localized carriers captured by O vacancy and the substitutional Co ions leads to the ferromagnetism of the Co:TiO2 thin film.
类目[WOS]Physics, Applied
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000262971800068
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240606
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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Yan, WS,Sun, ZH,Pan, ZY,et al. Oxygen vacancy effect on room-temperature ferromagnetism of rutile Co:TiO2 thin films[J]. APPLIED PHYSICS LETTERS,2009,94(4):42508.
APA Yan, WS.,Sun, ZH.,Pan, ZY.,Liu, QH.,Yao, T.,...&谢亚宁,胡天斗.(2009).Oxygen vacancy effect on room-temperature ferromagnetism of rutile Co:TiO2 thin films.APPLIED PHYSICS LETTERS,94(4),42508.
MLA Yan, WS,et al."Oxygen vacancy effect on room-temperature ferromagnetism of rutile Co:TiO2 thin films".APPLIED PHYSICS LETTERS 94.4(2009):42508.
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