National Changhua University of Education Institutional Repository : Item 987654321/15397
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 6507/11669
造访人次 : 29946978      在线人数 : 593
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/987654321/15397

题名: GRAIN SIZE EFFECT ON THE COLOSSAL MAGNETORESISTANCE IN GRANULAR PEROVSKITE La0.7Pb0.3MnO3
作者: Young, S. L.;Horng, Lance;Wu, K. M.;Ho, Y. W.;Shih, Y. T.;Chen, H. Z.;Kao, M. C.
贡献者: 物理學系
关键词: Granular;Perovskite;Magnetoresistance;Magnetotransport
日期: 2006-12
上传时间: 2013-02-05T02:19:20Z
出版者: World Scientific Publishing
摘要: Magnetic behaviors and transport properties in granular perovskite La0.7Pb0.3MnO3 with different grain sizes have been synthesized. The results show that magnetic susceptibility, ferromagnetic ordering temperature and magnetoresistance are affected by the grain size. These compounds with different grain sizes exhibit two kinds of magnetoresistance origins, intragrain double exchange and intergrain interfacial tunneling. With the increasing grain size, the intrinsic transport is dominant while the extrinsic tunneling gradually disappears. Thus, the basis of magnetotransport mechanism is the result of competition between the double exchange interaction and the interfacial tunneling effect.
關聯: Modern Physics Letters B, 20(29): 1859-1865
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
2020200710124.pdf25KbAdobe PDF498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