National Changhua University of Education Institutional Repository : Item 987654321/15410
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 6507/11669
造访人次 : 29938141      在线人数 : 522
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/15410

题名: Magnetic Behaviors and Enhanced Magnetoresistance in Granular (La0.7Pb0.3MnO3)1−x(Fe2O3)x Composites
作者: Young, S. L.;Horng, Lance;Ho, Y. W.;Wu, K. M.;Shih, Y. T.;Chen, H. Z.;Kao, M. C.;Shi, J. B.;Lin, C. C.
贡献者: 物理學系
日期: 2007-12
上传时间: 2013-02-05T02:19:43Z
出版者: WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
摘要: Recently, researches indicate that grain boundaries and interfaces can be the major factors of magnetoresistance effects, which has attracted renewed interests on the colossal magnetoresistance materials. In this article, the magnetic behaviours and magnetotransport properties of (La0.7Pb0.3MnO3)1-x(Fe2O3)x composites have been investigated. Ferromagnetism is gradually suppressed as the weight percentage of Fe2O3 is increased. Saturation magnetization (MS) decreases from 78.7 emu/g for x = 0.0 to 60.6 emu/g for x = 0.2, while ferromagnetic transition temperature (TC) remains around 346K for all composites. The resistivity increases significantly as the x value increases in these composites. It is suggested that the introduction of Fe2O3 into the composites acts as a separation layer between La0.7Pb0.3MnO3 grains. The enhancement of magnetoresistance has been verified with the addition of Fe2O3 into the composites.
關聯: physica status solidi �, 4(12): 4556-4559
显示于类别:[物理學系] 期刊論文

文件中的档案:

档案 大小格式浏览次数
index.html0KbHTML642检视/开启


在NCUEIR中所有的数据项都受到原著作权保护.

 

DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈