Large low-field magnetoresistance observed in heterostructure La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 superlattices

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	Large low-field magnetoresistance observed in heterostructure La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 superlattices; Large low-field magnetoresistance observed in heterostructure La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 superlattices
	G. C. Xiong; G. J. Lian; Z. H. Wang; M. G. Wang; H. Q. Ye
	2000 ; 2000
发表期刊	Materials Science and Engineering B-Solid State Materials for Advanced Technology ; Materials Science and Engineering B-Solid State Materials for Advanced Technology
ISSN	0921-5107 ; 0921-5107
卷号	76 期号:1 页码:41195
摘要	La0.7Ca0.3MnO3(LCMO)/Gd0.7Ca0.3MnO3(GCMO) multilayers have been prepared by pulsed laser deposition. High-resolution transmission electron micrographs demonstrate that perfect hetero-epitaxial growth has been achieved in the LCMO/GCMO superlattices with strains. In the superlattices, the resistivity-peak temperature decreases with reducing the thickness of the LCMO layers. Large low field magnetoresistance (LFMR) of Delta rho/rho(H) = 278% is obtained at 78.5 K in a LCMO/CCMO superlattice when a magnetic field swept within +/- 3100 Oe. This result suggests that the interface strains between LCMO and GCMO layers may have influences on the magnetic transport properties and a suitable film structure could be used to increase the LFMR. (C) 2000 Published by Elsevier Science S.A. All rights reserved.; La0.7Ca0.3MnO3(LCMO)/Gd0.7Ca0.3MnO3(GCMO) multilayers have been prepared by pulsed laser deposition. High-resolution transmission electron micrographs demonstrate that perfect hetero-epitaxial growth has been achieved in the LCMO/GCMO superlattices with strains. In the superlattices, the resistivity-peak temperature decreases with reducing the thickness of the LCMO layers. Large low field magnetoresistance (LFMR) of Delta rho/rho(H) = 278% is obtained at 78.5 K in a LCMO/CCMO superlattice when a magnetic field swept within +/- 3100 Oe. This result suggests that the interface strains between LCMO and GCMO layers may have influences on the magnetic transport properties and a suitable film structure could be used to increase the LFMR. (C) 2000 Published by Elsevier Science S.A. All rights reserved.
部门归属	peking univ, dept phys, beijing 100871, peoples r china. peking univ, mesoscop natl lab, beijing 100871, peoples r china. chinese acad sci, atom imaging solids lab, inst met res, shenyang 110015, peoples r china.;xiong, gc (reprint author), peking univ, dept phys, beijing 100871, peoples r china ; peking univ, dept phys, beijing 100871, peoples r china. peking univ, mesoscop natl lab, beijing 100871, peoples r china. chinese acad sci, atom imaging solids lab, inst met res, shenyang 110015, peoples r china.;xiong, gc (reprint author), peking univ, dept phys, beijing 100871, peoples r china
关键词	Interface Interface Magnetoresistance Magnetoresistance Superlattice Superlattice La1-xcaxmno3 La1-xcaxmno3 Films Films
URL	查看原文 ; 查看原文
WOS记录号	WOS:000087378700004 ; WOS:000087378700004
引用统计	被引频次：2[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/321006/37217
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. C. Xiong,G. J. Lian,Z. H. Wang,et al. Large low-field magnetoresistance observed in heterostructure La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 superlattices, Large low-field magnetoresistance observed in heterostructure La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 superlattices[J]. Materials Science and Engineering B-Solid State Materials for Advanced Technology, Materials Science and Engineering B-Solid State Materials for Advanced Technology,2000, 2000,76, 76(1):41195, 41195.
APA	G. C. Xiong,G. J. Lian,Z. H. Wang,M. G. Wang,&H. Q. Ye.(2000).Large low-field magnetoresistance observed in heterostructure La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 superlattices.Materials Science and Engineering B-Solid State Materials for Advanced Technology,76(1),41195.
MLA	G. C. Xiong,et al."Large low-field magnetoresistance observed in heterostructure La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 superlattices".Materials Science and Engineering B-Solid State Materials for Advanced Technology 76.1(2000):41195.