Local resistance switching at grain and grain boundary surfaces of polycrystalline tungsten oxide films

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	Local resistance switching at grain and grain boundary surfaces of polycrystalline tungsten oxide films
	Shang, DS ; Shi, L ; Sun, JR ; Shen, BG
刊名	NANOTECHNOLOGY
	2011
卷号	22 期号:25
关键词	TRANSITION-METAL OXIDES THIN-FILMS MEMORY WO3 OXIDATION BIPOLAR SRTIO3
ISSN号	0957-4484
通讯作者	Shang, DS: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Resistance switching behavior has been investigated in as-prepared and oxygen-annealed polycrystalline tungsten oxide films using conductive atomic force microscopy. The oxygen-annealed film appeared more insulative than the as-prepared films. The local current distributions demonstrated the lower conductivity at the grain boundaries than at the grains in the oxygen-annealed films. Reversible resistance switching behavior only occurred at the grain surface region of the oxygen-annealed films and the resistance switching process was described by the local valence change of tungsten ions induced by electrochemical migration of protons or oxygen vacancies. This different resistance switching behavior between the grain and grain boundary surface was attributed to the different oxygen vacancy density caused by the post-annealing process. The present results would be especially meaningful for the fabrication of nanoscale resistive nonvolatile memory devices.
收录类别	SCI
资助信息	National Basic Research of China; National Natural Science Foundation of China; Chinese Academy of Science; Beijing Municipal Nature Science Foundation
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/40940]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Shang, DS,Shi, L,Sun, JR,et al. Local resistance switching at grain and grain boundary surfaces of polycrystalline tungsten oxide films[J]. NANOTECHNOLOGY,2011,22(25).
APA	Shang, DS,Shi, L,Sun, JR,&Shen, BG.(2011).Local resistance switching at grain and grain boundary surfaces of polycrystalline tungsten oxide films.NANOTECHNOLOGY,22(25).
MLA	Shang, DS,et al."Local resistance switching at grain and grain boundary surfaces of polycrystalline tungsten oxide films".NANOTECHNOLOGY 22.25(2011).