Magnetic field dependence of voltage-current characteristics of Fe3O4 thin films at room temperature

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	Magnetic field dependence of voltage-current characteristics of Fe3O4 thin films at room temperature
	K. Zhao; J. F. Feng; Y. H. Huang; J. G. Zhao; H. B. Lu; X. F. Han; W. S. Zhan
	2006
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	88 期号:5
摘要	Fe3O4 thin films have been fabricated on glass substrate by the facing-target sputtering technique and their field-modulated voltage-current behavior was investigated. The nonlinear dependence of voltage on current density displays a switching from high-resistivity to low-resistivity states above a threshold current density. The low-resistivity state is very sensitive to the applied magnetic field, and a large negative magnetoresistance of similar to-27% is observed at 300 Oe under a high current density of 100 A cm(-2) at room temperature. Furthermore, the dependence of the magnetoresistance on the magnetic field reveals a good linear relationship. The observed results seem to favor a picture of spin-polarized intergrain tunneling through the grain boundaries. (c) 2006 American Institute of Physics.
部门归属	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), chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100080, peoples r china;kzhao@aphy.iphy.ac.cn
关键词	Magnetoresistance Transport
URL	查看原文
WOS记录号	WOS:000235136700059
引用统计	被引频次：3[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/321006/34736
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. Zhao,J. F. Feng,Y. H. Huang,et al. Magnetic field dependence of voltage-current characteristics of Fe3O4 thin films at room temperature[J]. Applied Physics Letters,2006,88(5).
APA	K. Zhao.,J. F. Feng.,Y. H. Huang.,J. G. Zhao.,H. B. Lu.,...&W. S. Zhan.(2006).Magnetic field dependence of voltage-current characteristics of Fe3O4 thin films at room temperature.Applied Physics Letters,88(5).
MLA	K. Zhao,et al."Magnetic field dependence of voltage-current characteristics of Fe3O4 thin films at room temperature".Applied Physics Letters 88.5(2006).