Enhanced ferromagnetic transition and magnetoresistance in granular Ag-added La0.7Ca0.3MnO3

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	Enhanced ferromagnetic transition and magnetoresistance in granular Ag-added La0.7Ca0.3MnO3
	Y. H. Huang ; K. F. Huang ; F. Luo ; L. L. He ; Z. M. Wang ; C. S. Liao ; C. H. Yan
刊名	Journal of Solid State Chemistry
	2003
卷号	174 期号:2 页码:257-263
关键词	ag-added La0.7Ca0.3MnO3 synthesis magnetic behavior transport room-temperature magnetoresistance la0.8ca0.2mno3 thin-films giant magnetoresistance transport-properties manganites la0.67ca0.33mno3 la1-xcaxmno3 perovskites deposition silver
ISSN号	0022-4596
中文摘要	Granular Ag-added La0.7Ca0.3MnO3 (LCMO) samples were prepared by a sol-gel chemical route. Significant enhancements in Curie temperature (T-C), metal-insulator transition (T-p) and magnetoresistance (MR) effects near room temperature arc observed in as-obtained samples. 10 wt% addition of Ag in LCMO causes T-C shift from 272 to 290 K T-p boost up for more than 100 K and resistivity decrease by more than 3 orders of magnitude. X-ray diffraction patterns, thermal analysis and energy dispersive analysis of X-rays evidently show the existence of metal silver in LCMO matrices. High-resolution electron microscopy illustrates a well crystallization for LCMO grains in existence of Ag. It is argued that improved grain boundary effect and better crystallization caused by Ag addition are responsible for the enhancements. (C) 2003 Elsevier Inc. All rights reserved.
原文出处	://WOS:000185180500004
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/35862]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. H. Huang,K. F. Huang,F. Luo,et al. Enhanced ferromagnetic transition and magnetoresistance in granular Ag-added La0.7Ca0.3MnO3[J]. Journal of Solid State Chemistry,2003,174(2):257-263.
APA	Y. H. Huang.,K. F. Huang.,F. Luo.,L. L. He.,Z. M. Wang.,...&C. H. Yan.(2003).Enhanced ferromagnetic transition and magnetoresistance in granular Ag-added La0.7Ca0.3MnO3.Journal of Solid State Chemistry,174(2),257-263.
MLA	Y. H. Huang,et al."Enhanced ferromagnetic transition and magnetoresistance in granular Ag-added La0.7Ca0.3MnO3".Journal of Solid State Chemistry 174.2(2003):257-263.