Low-field positive and high-field negative magneto-resistances in multiphase Fe-oxide thin films at room temperature

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	Low-field positive and high-field negative magneto-resistances in multiphase Fe-oxide thin films at room temperature
	K. Zhao; J. Xing; Y. Z. Liu; J. G. Zhao; H. B. Lu
	2007
发表期刊	Chinese Science Bulletin
ISSN	1001-6538
卷号	52 期号:12 页码:1607-1611
摘要	Multiphase Fe-oxide thin films are fabricated on glass substrates by a facing-target sputtering technique. X-ray diffraction and X-ray photoelectron spectroscopy reveal that Fe, FeA, rFe(2)O(3) and FeO coexist in the films. High resolution transmission electron microscopy shows the well-defined columnar grain structure with the unoxidized Fe as the core and iron-oxide as the shell. The low-field positive and high-field negative magnetoresistances coexist in such a system at room temperature, which can be explained by considering a shell/core model. Nonlinear current-voltage curve and photovoltaic effect further confirm the tunneling-type conduction.
部门归属	china univ petroleum, dept math & phys, beijing 102249, peoples r china. chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100080, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zhao, k (reprint author), china univ petroleum, dept math & phys, beijing 102249, peoples r china;zhk@cup.edu.cn
关键词	Magnetoresistance Magnetic Properties Thin Film Ultrafine Iron Particles Core-shell Tunnel-junctions Nanoparticles Fe3o4 Fabrication Phase
URL	查看原文
WOS记录号	WOS:000247578400004
引用统计	被引频次：1[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/321006/34072
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. Zhao,J. Xing,Y. Z. Liu,et al. Low-field positive and high-field negative magneto-resistances in multiphase Fe-oxide thin films at room temperature[J]. Chinese Science Bulletin,2007,52(12):1607-1611.
APA	K. Zhao,J. Xing,Y. Z. Liu,J. G. Zhao,&H. B. Lu.(2007).Low-field positive and high-field negative magneto-resistances in multiphase Fe-oxide thin films at room temperature.Chinese Science Bulletin,52(12),1607-1611.
MLA	K. Zhao,et al."Low-field positive and high-field negative magneto-resistances in multiphase Fe-oxide thin films at room temperature".Chinese Science Bulletin 52.12(2007):1607-1611.