The magneto-transport and low-field magnetoresistance in double-layer manganites La2-2xSr1+2xMn2O7 with insulating second phase

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	The magneto-transport and low-field magnetoresistance in double-layer manganites La2-2xSr1+2xMn2O7 with insulating second phase
	X. Y. Yao; G. L. Yuan; J. M. Liu; Y. Yang; Z. G. Liu
	2003
发表期刊	Materials Letters
ISSN	0167-577X
卷号	57 期号:21 页码:3199-3205
摘要	The double-layer perovskite manganite ceramics with a nominal chemistry La2-2xSr1+2xMn2O7 (LSMO(n = 2)) at x = 0.15 and 0.3 with minor La2O3 insulating phase are prepared using sol-gel method and their magneto-transport and low-field magnetoresistive (LFMR) properties are investigated and compared with those properties of ceramic La0.67Sr0.33MnO3 (LSMO) with minor La2O3 second phase. It is revealed that the ceramic LSMO(n = 2) shows different conduction and magnetic behaviors from ceramic LSMO. It is suggested that the observed LFMR for ceramic LSMO(n = 2) is attributed to the spin-polarized tunneling mechanism although its value is slightly lower than that for LSMO. (C) 2003 Elsevier Science B.V. All rights reserved.
部门归属	nanjing univ, dept phys, natl lab solid state microstruct, nanjing 210093, jiangsu, peoples r china. chinese acad sci, int ctr mat phys, shenyang, peoples r china.;liu, jm (reprint author), nanjing univ, dept phys, natl lab solid state microstruct, hankou rd 22, nanjing 210093, jiangsu, peoples r china
关键词	Low-field Magnetoresistance Double-layer Perovskite Manganites Thin-films Polycrystalline Property
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WOS记录号	WOS:000183904300011
引用统计	被引频次：5[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/321006/36131
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Y. Yao,G. L. Yuan,J. M. Liu,et al. The magneto-transport and low-field magnetoresistance in double-layer manganites La2-2xSr1+2xMn2O7 with insulating second phase[J]. Materials Letters,2003,57(21):3199-3205.
APA	X. Y. Yao,G. L. Yuan,J. M. Liu,Y. Yang,&Z. G. Liu.(2003).The magneto-transport and low-field magnetoresistance in double-layer manganites La2-2xSr1+2xMn2O7 with insulating second phase.Materials Letters,57(21),3199-3205.
MLA	X. Y. Yao,et al."The magneto-transport and low-field magnetoresistance in double-layer manganites La2-2xSr1+2xMn2O7 with insulating second phase".Materials Letters 57.21(2003):3199-3205.