Gd掺杂ErNi_2B_2C体系的超导和磁特性研究  

SUPERCONDUCTIVITY AND MAGNETIC PROPERTIES IN THE Gd-DOPED IN RNi_2B_2C SYSTEM

作　　者：陈颖[1] 曹世勋[1] 葛军饴[1] 康保娟[1] 张金仓[1] 

机构地区：[1]上海大学理学院物理系,上海200444

出　　处：《低温物理学报》2008年第4期279-282,共4页Low Temperature Physical Letters

基　　金：中国科技部(项目编号:NKBRSF-G1999064603);国家自然科学基金(项目编号:10174071)资助的课题~~

摘　　要：本文研究了Gd掺杂对Er_(1-x)Gd_xNi_2B_2C体系超导和磁转变行为的影响.随着稀土元素Gd逐步替代Er,体系的超导电性被强烈抑制,反铁磁转变温度逐渐升高.本文就Gd掺杂对体系超导和磁性的影响机制进行了讨论,并基于DG因子模型,对实验结果进行了分析.Study of superconductivity and magnetic transition behaviors influenced by the Gd-doping have been performed on Er1-xGdxNi2B2C （x =0, 0.1, 0.3, 1 ） system. The results show that the doping of Gd ion on the rare site of Er strongly suppressed the superconductivity of the system, while the antiferromagnetic transition temperature of the sample increases as the Gd-doping content increases. The mechanism of Gddoping effect on the superconductivity and magnetic properties was discussed, and the results were analysed based on the DG model for the intermetalic borocarbide compound system.

关 键 词：Er1-xGdxNi2B2C 超导电性 磁特性 DG因子 

分 类 号：O511[理学—低温物理]