Fe-doping effects on the electrical and magnetic transitions in polycrystalline Pr1-xSrxMnO3 (x=1/4, 3/8, and 1/2)

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	Fe-doping effects on the electrical and magnetic transitions in polycrystalline Pr1-xSrxMnO3 (x=1/4, 3/8, and 1/2)
	Li, J ; Li, ZW ; Ong, CK ; Zheng, DN
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2004
卷号	16 期号:16 页码:2839
关键词	A-SITE CATIONS COLOSSAL MAGNETORESISTANCE ANTIFERROMAGNET ND0.45SR0.55MNO3 AVERAGE RADIUS THIN-FILMS MANGANITES TRANSPORT INSULATOR
ISSN号	0953-8984
通讯作者	Li, J: Chinese Acad Sci, Inst Phys, Natl Lab Superconductiv, POB 603, Beijing 100080, Peoples R China.
中文摘要	Electrical and magnetic transitions in Pr1-xSrxMnO3 and Pr1-xSrxMn0.95Fe0.05O3 ceramic samples with x = 1/4, 3/8, and 1/2 have been investigated. It is proved that 5% Fe doping in the system suppresses electrical conduction and ferromagnetism severely, but favours antiferromagnetism. The existence of spin clusters at temperatures above the ferromagnetic transition T-C is demonstrated in the Fe-doped x = 1/2 sample, which is caused by the Fe-doping-induced magnetic inhomogeneity. The transport behaviour above T-C in this sample is governed by variable-range hopping of the magnetic polarons. For the Fe-doped x = 1/4 sample, the insulator-to-metal (I-M) transition drops behind T-C by nearly 80 K; accordingly, two magnetoresistance peaks appear. One is around T-C, and the other lies just at the I-M transition temperature. The possible underlying mechanism is discussed qualitatively.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/38060]
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	Li, J,Li, ZW,Ong, CK,et al. Fe-doping effects on the electrical and magnetic transitions in polycrystalline Pr1-xSrxMnO3 (x=1/4, 3/8, and 1/2)[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2004,16(16):2839.
APA	Li, J,Li, ZW,Ong, CK,&Zheng, DN.(2004).Fe-doping effects on the electrical and magnetic transitions in polycrystalline Pr1-xSrxMnO3 (x=1/4, 3/8, and 1/2).JOURNAL OF PHYSICS-CONDENSED MATTER,16(16),2839.
MLA	Li, J,et al."Fe-doping effects on the electrical and magnetic transitions in polycrystalline Pr1-xSrxMnO3 (x=1/4, 3/8, and 1/2)".JOURNAL OF PHYSICS-CONDENSED MATTER 16.16(2004):2839.