CudopingeffectonMnsitesofLa2/3Ca1/3MnO3system

被引：0

作者：

SUN Xia TANG Ping CHEN Yue HUANG Zhen LI GuangLIU Zhimin CHEN Zhiyou WANG Sheng and YUAN Songliu High Magnetic Field Laboratory Institute of Plasma Physics Chinese Academy of Sciences P O Box Hefei China ^{[1126
,230031
]}

机构：

来源：

ChineseScienceBulletin | 1998年 / 17期

关键词：

Colossal magnetoresistance; Cu doping; transfer behavior; charge transfer;

D O I：

暂无

中图分类号：

O511 [超导电性];

学科分类号：

070205 ; 080705 ;

摘要：

The temperature dependence of resistance and magnetoresistance at 77 K for Cu-doped La 2/3Ca 1/3Mn 1-xCu xO-3 have been investigated. Besides the transition similar to the Cu-free sample at ～260 K, a new transition at lower temperature appears for Cu-doped samples. The new transition moves toward low temperature with increasing of Cu content. A new conductive proceeding related to Cu ion may exist. Magnetoresistance at liquid nitrogen shows that MR increased three orders when x is changed from 0 to 0 15. Moreover, the main variation of magnetoresistance is below the field of 1 T.

引用

页码：1442 / 1447

页数：6