National Changhua University of Education Institutional Repository : Item 987654321/15378
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 6507/11669
造访人次 : 30045992      在线人数 : 536
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/987654321/15378

题名: COMPARISON OF THE MAGNETIZATION BEHAVIORS IN PEROVSKITE COMPOUNDS La0.7-xLnxPb0.3MnO3 (Ln=Pr AND Sm)
作者: Young, S. L.;Chen, H. Z.;Horng, Lance;Ho, Y. W.;Kao, H. C. I.
贡献者: 物理學系
关键词: Magnetization;Manganite;Perovskite;Ferromagnetism
日期: 2005-01
上传时间: 2013-02-05T02:18:30Z
出版者: World Scientific Publishing
摘要: The magnetization behaviors of two manganite oxide systems, La0.7-xLnxPb0.3MnO3 (Ln=Pr and Sm), have been synthesized. The replacement of La ions by Pr or Sm results in a considerable decrease in the ferromagnetic ordering temperature TC and clearly irreversible behavior in the zero-field-cooling-field-cooling curve at a low applied field, showing a short-range spin order phase. These facts are in agreement with the smaller ionic radii of Pr (0.130 nm) and Sm (0.124 nm) ions in contrast to La ion (0.136 nm), and the corresponding larger distortion of perovskite structures. The saturation magnetization MS decreases as Sm content increases relative to the increase of MS as Pr content increases. This can be interpreted in terms of the competition between suppression of ferromagnetism due to structure tuning induced by the small ionic radius of the interpolated cations into the La-site and the increase of ferromagnetically interacting spins due to the introduction of magnetic Pr or Sm ions with f-shell electrons.
關聯: Int. J. Mod. Phys. B, 19(1-3): 563-568
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
2020200710121.pdf25KbAdobe PDF484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