Direct observation of phase separation in La0.45Sr0.55MnO3-delta

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	Direct observation of phase separation in La0.45Sr0.55MnO3-delta
	Li, RW ; Zhang, ZR ; Li, QA ; Sun, JR ; Wang, GJ ; Cheng, ZH ; Wang, ZH ; Zhang, SY ; Han, BS ; Shen, BG
刊名	JOURNAL OF APPLIED PHYSICS
	2002
卷号	92 期号:12 页码:7404
关键词	DOUBLE-EXCHANGE SYSTEMS GIANT MAGNETORESISTANCE DOPED MANGANITES MAGNETIC-FIELD LA-139 NMR MN-55 NMR LA0.5CA0.5MNO3 LA1-XSRXMNO3 TRANSITION CHARGE
ISSN号	0021-8979
通讯作者	Li, RW: Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	Single-phase Gd2Co17-xVx compounds (x=0.0-1.5) crystallizing in the rhombohedral Th2Zn17 structure have been synthesized. The lattice parameters a and c of the compounds increase linearly with increasing V content, and the rate of increase of c is about 2.5 times as large as that of a. Substitution of a small amount of V atoms (x=0.3) for Co atoms leads to the occurrence of uniaxial magnetocrystalline anisotropy of Gd2Co17-xVx. The anisotropy field H-A increases drastically with increasing V content. The variations of both the lattice parameters and the magnetocrystalline anisotropy with V content suggest a preferential occupation of the V atoms at the 6c dumbbell site. The Curie temperature T-C, saturation moment M-S, and average Co moment of the compounds decrease greatly as the V content increases. The rapid decrease of T-C is essentially attributed to a serious weakening of the Co-Co interactions due to the preferential occupation of the V atoms at the 6c site. The effect of a strong hybridization between the V and Co atoms is plausibly responsible for the decreases of the M-S and . (C) 2002 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/311004/36061]
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, RW,Zhang, ZR,Li, QA,et al. Direct observation of phase separation in La0.45Sr0.55MnO3-delta[J]. JOURNAL OF APPLIED PHYSICS,2002,92(12):7404.
APA	Li, RW.,Zhang, ZR.,Li, QA.,Sun, JR.,Wang, GJ.,...&Shen, BG.(2002).Direct observation of phase separation in La0.45Sr0.55MnO3-delta.JOURNAL OF APPLIED PHYSICS,92(12),7404.
MLA	Li, RW,et al."Direct observation of phase separation in La0.45Sr0.55MnO3-delta".JOURNAL OF APPLIED PHYSICS 92.12(2002):7404.