Microstructure, ferromagnetism, and magnetic transport of Ti1-xCoxO2 amorphous magnetic semiconductor

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	Microstructure, ferromagnetism, and magnetic transport of Ti1-xCoxO2 amorphous magnetic semiconductor
	H. Q. Song; L. M. Mei; S. S. Yan; X. L. Ma; J. P. Liu; Y. Wang; Z. Zhang
	2006
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	99 期号:12
摘要	TiO2-based magnetic semiconductors with high Co doping concentrations (Ti1-xCoxO2) were synthesized under thermal nonequilibrium condition by sputtering machine. Microstructure and composition analysis by transmission electron microscopy, x-ray photoelectron spectroscopy, and electron energy-loss spectroscopy indicated that Co element was incorporated into TiO2 to form Ti1-xCoxO2 compound. The direct evidence for the compositional inhomogeneity of the Ti1-xCoxO2 compound was given. Room temperature ferromagnetism with high magnetization was obtained, which could be attributed to the intrinsic properties of the amorphous magnetic semiconductor. The electrical transport in a low temperature range was explained by spin-dependent Efros's variable range hopping, and correspondingly an exponential function of the magnetoresistance versus T-1/2 was found. (c) 2006 American Institute of Physics.
部门归属	shandong univ, sch phys & microelect, jinan 250100, peoples r china. shandong univ, natl key lab crystal mat, jinan 250100, peoples r china. chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china. univ texas, dept phys, arlington, tx 76019 usa. chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100080, peoples r china.;song, hq (reprint author), shandong univ, sch phys & microelect, jinan 250100, peoples r china;tianqin@mail.sdu.edu.cn
关键词	Room-temperature Ferromagnetism Doped Titanium-dioxide Thin-films Tio2 Anatase Magnetoresistance Zno
URL	查看原文
WOS记录号	WOS:000238730000068
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34458
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Q. Song,L. M. Mei,S. S. Yan,et al. Microstructure, ferromagnetism, and magnetic transport of Ti1-xCoxO2 amorphous magnetic semiconductor[J]. Journal of Applied Physics,2006,99(12).
APA	H. Q. Song.,L. M. Mei.,S. S. Yan.,X. L. Ma.,J. P. Liu.,...&Z. Zhang.(2006).Microstructure, ferromagnetism, and magnetic transport of Ti1-xCoxO2 amorphous magnetic semiconductor.Journal of Applied Physics,99(12).
MLA	H. Q. Song,et al."Microstructure, ferromagnetism, and magnetic transport of Ti1-xCoxO2 amorphous magnetic semiconductor".Journal of Applied Physics 99.12(2006).