多铁性材料Bi_(0.95)R_(0.05)(Fe_(0.95)Mn_(0.05))O_3(R=La,Pb)的磁性及局域结构研究  

Research on Magnetic Property and Local Structure of Multiferroic Material Bi_(0.95)R_(0.05)(Fe_(0.95)Mn_(0.05))O_3(R=La,Pb)

作　　者：李永涛[1] 滕晓雪 汪帅[1] 李坤芳[1] 方婷[1] 李兴鳌[1] 

机构地区：[1]南京邮电大学理学院,南京210046 [2]南京邮电大学通信与信息工程学院,南京210046

出　　处：《材料导报》2013年第20期4-6,共3页Materials Reports

基　　金：国家自然科学基金(51172110);江苏省自然科学基金(BK2010525);南京邮电大学科研项目(NY212099)

摘　　要：利用溶胶-凝胶法成功制备了共掺杂Bi0.95R0.05(Fe0.95Mn0.05)O3(R=La,Pb)样品,并对样品的磁性进行了测量和研究。研究发现La掺杂的Bi(Fe0.95Mn0.05)O3材料磁性有较大的提高,而Pb掺杂Bi(Fe0.95Mn0.05)O3样品的磁性减弱。同时,利用同步辐射实验技术对样品的局域结构进行了研究,进而分析样品磁性变化的原因。The co-doped Bio.gsRo.os （Fe0.95Mno.os）O3 （R=La,Pb） samples were successfully prepared by sol-gel method. The magnetic properties of the samples were measured and studied. It is found that the magnetic property of La doped Bi（Feo. 95 Mno. 05 ）03 improved greatly, but that of Pb doped Bi（Feo. 9~ Mno. 05 ）03 decreased. In addition, local structure of the samples was researched using synchrotron radiation experimental techniques, in order to analyze the reason why the samples＇ magnetic properties are enhanced.

关 键 词：多铁性材料 局域结构 磁性 X射线吸收精细结构 

分 类 号：O469[理学—凝聚态物理]