Effects of inhomogeneous oxygen content in (La,Gd)(0.7)Ca0.3MnO3+delta perovskites

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	Effects of inhomogeneous oxygen content in (La,Gd)(0.7)Ca0.3MnO3+delta perovskites
	Sun, JR ; Rao, GH ; Zhang, YZ
刊名	APPLIED PHYSICS LETTERS
	1998
卷号	72 期号:24 页码:3208
关键词	CA-MN-O LARGE MAGNETORESISTANCE FILMS
ISSN号	0003-6951
通讯作者	Sun, JR: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China.
中文摘要	Magnetoresistance properties of compounds with the same formula La0.7-xGdxCa0.3MnO3+delta (x = 0, 0.04) but synthesized by the solid-state reaction method from different starting materials are studied. Nearly stoichiometric compounds are obtained when La(OH)(3) is used for sample preparation. However, under the same condition, La2O3 causes considerable oxygen deficiency in resulting samples, characterized by a broad metal-semiconductor transition far below the magnetic transition. Inhomogeneous distribution of the oxygen content in compounds (an inhomogeneity beyond the detection of powder x-ray diffraction) can occur when both La2O3 and La(OH)(3) coexist in the starting materials, leading to two metal-semiconductor transitions which are obviously developments of those in compounds prepared respectively from La2O3 and La(OH)(3), and one magnetic transition corresponding to the upper resistive transition. (C) 1998 American Institute of Physics.
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/311004/36742]
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	Sun, JR,Rao, GH,Zhang, YZ. Effects of inhomogeneous oxygen content in (La,Gd)(0.7)Ca0.3MnO3+delta perovskites[J]. APPLIED PHYSICS LETTERS,1998,72(24):3208.
APA	Sun, JR,Rao, GH,&Zhang, YZ.(1998).Effects of inhomogeneous oxygen content in (La,Gd)(0.7)Ca0.3MnO3+delta perovskites.APPLIED PHYSICS LETTERS,72(24),3208.
MLA	Sun, JR,et al."Effects of inhomogeneous oxygen content in (La,Gd)(0.7)Ca0.3MnO3+delta perovskites".APPLIED PHYSICS LETTERS 72.24(1998):3208.