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	Evidence of structural defect enhanced room-temperature ferromagnetism in Co-doped ZnO
	Song, C. ; Pan, S. N. ; Liu, X. J. ; Li, X. W. ; Zeng, F. ; Yan, W. S. ; He, B. ; Pan, F.
	2010-05-10 ; 2010-05-10
关键词	NEAR-EDGE STRUCTURE FILMS ABSORPTION SEMICONDUCTORS AL2O3 TIO2 Physics, Condensed Matter
中文摘要	We report experimentally that room-temperature ferromagnetism of Co-doped ZnO is strongly correlated with structural defects, and that carriers involved in carrier-mediated exchange are by nature by-products of the creation of the defects. On the other hand, the carrier concentration has pronounced influences on the absorption edge in optical transmission spectra of epitaxial Co: ZnO films, in which both a blue-shift and a red-shift are observed. Furthermore, high-temperature annealing results in evolution of the local Co structure from Co2+ replacing Zn2+ to a Co3O4-based phase, which most likely accounts for the transition from ferromagnetism to paramagnetism in the Co:ZnO films.
语种	英语 ; 英语
出版者	IOP PUBLISHING LTD ; BRISTOL ; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21516]
专题	清华大学
推荐引用方式 GB/T 7714	Song, C.,Pan, S. N.,Liu, X. J.,et al. Evidence of structural defect enhanced room-temperature ferromagnetism in Co-doped ZnO[J],2010, 2010.
APA	Song, C..,Pan, S. N..,Liu, X. J..,Li, X. W..,Zeng, F..,...&Pan, F..(2010).Evidence of structural defect enhanced room-temperature ferromagnetism in Co-doped ZnO..
MLA	Song, C.,et al."Evidence of structural defect enhanced room-temperature ferromagnetism in Co-doped ZnO".(2010).

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