Dy、Yb掺杂稀土锰氧化物的磁性和电性  

Doping Effects of Dy and Yb in rare-earth doped manganic oxides

作　　者：王军华[1] 尹立云[1] 

机构地区：[1]潍坊学院实验室与设备管理处,山东潍坊261043

出　　处：《潍坊学院学报》2002年第6期29-31,共3页Journal of Weifang University

摘　　要：在La0 .67Ca0 .33MnO3中用Dy和Yb对La进行了部分替代 ,随替代量的增加 ,材料的居里温度单调下降。掺Dy使峰值电阻率迅速增加 ,而Yb的掺杂对电阻率的影响较小 ,说明样品的磁性和输运性质受掺杂离子的影响。La in La0.67Ca0.33MnO3 has been partially substituted by Dy and Yb. With increasing doping amounts, the Curie temperature decreases monotonically. When La is substituted by Dy, the peak resistivity increases rapidly while it is suppressed by Yb doping. This indicates that the size effect of doping ions is related to the specie of rare-earth ions.

关 键 词：磁性 电性 稀土掺杂 锰氧化物 晶格效应 居里温度 电阻率 稀土离子 掺杂量 

分 类 号：O614.711[理学—无机化学] O48[理学—化学]