Enhanced room temperature magnetoresistance effect in oxygen defective   beta-MnO2 microcrystal

doi:10.1016/j.cplett.2006.09.088

CORC > 北京大学 > 化学与分子工程学院

	Enhanced room temperature magnetoresistance effect in oxygen defective beta-MnO2 microcrystal
	Luo, Feng ; Song, Wei ; Yan, Chun-Hua
刊名	化学物理学快报
	2006
关键词	LITHIUM BATTERIES HYDROTHERMAL SYNTHESIS MANGANESE OXIDES ALPHA-MNO2 NANOWIRES MAGNETISM ELECTRODE
DOI	10.1016/j.cplett.2006.09.088
英文摘要	Highly uniform rod-like beta-MnO2 microcrystals have been synthesized via a urea mediated hydrothermal method. These monocrystalline products are of tetragonal zircon structure with growth direction along [110]. The metal-insulator (M-I) transition displayed from resistivity shifts to a higher temperature, which is induced by the existence of oxygen defects. Congruously with the M-I transition temperature, the magnetoresistance (MR) ratio reaches an abrupt peak and then slowly increases with temperature, exceeding 50% at room temperature under 5.0 T. This numerously enhanced positive room temperature MR can be mainly attributed to the formation of oxygen defects during the hydrothermal process. (c) 2006 Elsevier B.V. All rights reserved.; Chemistry, Physical; Physics, Atomic, Molecular & Chemical; SCI(E); EI; 0; ARTICLE; 4-6; 337-340; 431
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/251273]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Luo, Feng,Song, Wei,Yan, Chun-Hua. Enhanced room temperature magnetoresistance effect in oxygen defective beta-MnO2 microcrystal[J]. 化学物理学快报,2006.
APA	Luo, Feng,Song, Wei,&Yan, Chun-Hua.(2006).Enhanced room temperature magnetoresistance effect in oxygen defective beta-MnO2 microcrystal.化学物理学快报.
MLA	Luo, Feng,et al."Enhanced room temperature magnetoresistance effect in oxygen defective beta-MnO2 microcrystal".化学物理学快报 (2006).