The transport properties and magnetic coupling in the trilayered films of La2/3Ca1/3MnO3/(La0.3Nd0.7)2/3Ca1/3MnO3/La2/3Ca1/3MnO3
The transport properties and magnetic coupling in the trilayered films of La2/3Ca1/3MnO3/(La0.3Nd0.7)2/3Ca1/3MnO3/La2/3Ca1/3MnO3
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La2/3Ca1/3MnO3/(La0.3Nd0.7)2/3Ca1/3MnO3/La2/3Ca1/3MnO3三层薄膜的输运特性和磁耦合
DOI：
10.1002/pssa.200306751
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发表时间：
2004-02
期刊：
影响因子：
--
通讯作者：
Y. P. Sun et al
中科院分区：
文献类型：
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作者：
J. M. Dai;Y. P. Sun et al
采用直流磁控溅射技术制备了不同厚度组合的La2/3Ca1/3MnO3/(La0.3Nd0.7)2/3Ca1/3MnO3/La2/3Ca1/3MnO3 （LNL）三层薄膜。系统地研究了LNL薄膜的电输运和磁性能。结果表明，部分LNL薄膜的磁阻效应可以得到改善。当顶层厚度大于150nm时，La2/3Ca1/3MnO3的电传递主要由顶层决定，随着顶层厚度的减小，La3+和Nd3+离子扩散形成的中间层和中间层界面中的交叉层将起重要作用。然而，磁性能是由与交叉层相关的整个薄膜和层间的强磁耦合相互作用决定的。（©2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim）
The trilayered films of La2/3Ca1/3MnO3/(La0.3Nd0.7)2/3Ca1/3MnO3/La2/3Ca1/3MnO3 (LNL) with different thickness combinations are prepared by dc magnetron sputtering technique. The electrical transport and magnetic properties of the LNL films are investigated systematically. It is found that the performance of magnetoresistance effect in some of the LNL films can be improved. The electrical transport are mainly determined by the top-layer of La2/3Ca1/3MnO3 when the thickness of top-layer is larger than 150 nm, and the middle-layer and crossover-layer in the interface between top-layer and middle-layer caused by the diffusion of La3+ and Nd3+ ions will play an important role with decreasing the thickness of top-layer. However, the magnetic properties are determined by the whole of films associated with the crossover-layers and the strong magnetic coupling interaction between the inter-layers. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)