National Changhua University of Education Institutional Repository : Item 987654321/15443
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 6507/11669
造訪人次 : 30034147      線上人數 : 588
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 進階搜尋

請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/15443

題名: Magnetization Processes of (La0.7Pb0.3MnO3)1−x(SiO2)x Composites
作者: Young, S. L.;Wu, T. C.;Horng, Lance;Lin, C. H.;Chen, H. Z.;Kao, M. C.;Ou, C. R.;Shih, N. F.;Shi, J. B.
貢獻者: 物理學系
關鍵詞: Composite;Saturation magnetization;Ferromagnetic hysteresis
日期: 2010
上傳時間: 2013-02-05T02:20:39Z
出版者: Springer Science+Business Media
摘要: The ceramic composites, (La0.7Pb0.3MnO3)1−x
(SiO2)x , with diluted magnetic properties are prepared using
solid-sate sintering route. Magnetization processes of
(La0.7Pb0.3MnO3)1−x (SiO2)x composites are explored in
this study. Ferromagnetism is gradually attenuated due to
the magnetic dilution induced by the increase of SiO2 content.
Clearly, irreversible behavior is observed in the zerofield
cooling and the field cooling (ZFC–FC) curves at a low
field of 100 Oe. Saturation magnetization decreases as x increases
while ferromagnetic transition temperature remains
around 346 K for all composites. All the composites exhibit
ferromagnetic hysteresis behavior which can be modeled
by the law of the approach to saturation in the form
M = MS(1 − a/H). The term a/H expresses the deviation
of magnetization from saturation. The smaller factor a
for La0.7Pb0.3MnO3-rich samples results in sharper square
curve which should be associated with the long-range spin
order of ferromagnetic coupling.
關聯: Journal of Superconductivity and Novel Magnetism, 23(6): 953-956
顯示於類別:[物理學系] 期刊論文

文件中的檔案:

檔案 大小格式瀏覽次數
index.html0KbHTML600檢視/開啟


在NCUEIR中所有的資料項目都受到原著作權保護.

 

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