Microstructural evolution of bulk polycrystalline La0.7-xLuxSr0.3MnO3 (x=0.2, 0.45, 0.6) compounds

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	Microstructural evolution of bulk polycrystalline La0.7-xLuxSr0.3MnO3 (x=0.2, 0.45, 0.6) compounds
	B. Z. Sun; L. L. He; F. Luo; C. H. Yan
	2006
发表期刊	Materials Chemistry and Physics
ISSN	0254-0584
卷号	98 期号:2-3 页码:415-418
摘要	Crystal structure and microstructure of La0.7-xLuxSr0.3MnO3 (x = 0.2 0.45, 0.6) prepared by usual ceramic techniques and grinding procedure are studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). With substitution of Lu3+ for La3+ and Sr2+, LSMO rhombohedral phase has been gradually converted to the stable hexagonal phase LuMnO3. Surprisingly, XRD and the energy-dispersive X-ray spectroscopy (EDS) analyses have demonstrated that both lattice parameters (a- and c-lengths) and the La3+/Sr2+ atomic ratio of the rhombohedral phase are decreasing with increasing x. The abnormal phenomenon is related to the fact that the Mn3+/Mn4+ atomic ratio in the reactant is changed accompanying with combination of Lu3+ and Mn2O3. (c) 2005 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. northeastern univ, coll sci, shenyang 110004, peoples r china. peking univ, coll chem & mol engn, state key lab rare earth mat chem & applicat, pku hku joint lab rare earth mat & bioorgan chem, beijing 100871, peoples r china.;sun, bz (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;bzsun@imr.ac.cn
关键词	Crystal Structure Microstructure Substitution Lattice Parameters Atomic Ratio Giant Magnetoresistance Transport-properties Granular Perovskites Double-exchange Phase-diagram Doped Lamno3 La1-xsrxmno3 Films Transition
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WOS记录号	WOS:000238298100041
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34466
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Z. Sun,L. L. He,F. Luo,et al. Microstructural evolution of bulk polycrystalline La0.7-xLuxSr0.3MnO3 (x=0.2, 0.45, 0.6) compounds[J]. Materials Chemistry and Physics,2006,98(2-3):415-418.
APA	B. Z. Sun,L. L. He,F. Luo,&C. H. Yan.(2006).Microstructural evolution of bulk polycrystalline La0.7-xLuxSr0.3MnO3 (x=0.2, 0.45, 0.6) compounds.Materials Chemistry and Physics,98(2-3),415-418.
MLA	B. Z. Sun,et al."Microstructural evolution of bulk polycrystalline La0.7-xLuxSr0.3MnO3 (x=0.2, 0.45, 0.6) compounds".Materials Chemistry and Physics 98.2-3(2006):415-418.