Ho,Co共掺杂BiFeO_3的磁性及局域结构研究  

Research of the Magnetic Properties and Local Structure for(Ho,Co) Codoped BiFeO_3

作　　者：李永涛[1] 张会[1] 郭会娟[1] 邓森屾[1] 包刚[1] 董慧媛[1] 陈伟[1] 葛智勇[1] 

机构地区：[1]南京邮电大学理学院,南京210046

出　　处：《材料导报》2013年第12期12-14,共3页Materials Reports

基　　金：南京邮电大学科研项目(NY211144;JG00712JX21)

摘　　要：利用溶胶-凝胶法成功制备Ho-Co共掺杂Bi1-xHoxFe0.95Co0.05O3(x=0.05,0.10,0.15)样品,并对样品的磁性进行了详细研究。研究发现Ho-Co共掺杂的BiFeO3材料的磁性有极大提高;并且随着Ho离子掺杂量的增加,样品的磁性也在不断增强。利用同步辐射实验技术,对样品的局域结构进行了研究,进而分析样品磁性增强的原因。Binary element （Ho, Co） co-doped Bi1-xHoxFe0.95Co0.055O3（x=0.05,0.10,0.15） samples were successfully prepared by sol-gel method. The magnetic properties of the samples were studied detailedly. It is found that the magnetic properties of （Ho, Co） co-doped BiFeO3 have improved greatly. In addition, the samples＇ magnetic properties are continuously enhancing with the increasing of doping amounts of Ho ion. At last, using synchrotron radiation experimental techniques, the samples＇ local structure was studied 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]