NbSr_2Nd_(2-x)Ce_xCu_2O_(10-δ)体系的超导电性  

SUPERCONDUCTIVITY OF NbSr_2Nd_(2-x)Ce_xCu_2O_(10-δ) SYSTEM

作　　者：王士维[1] 朱英杰[1] 钱逸泰[1] 李如康[1] 陈祖耀[1] 王楠林[2] 陈兆甲[2] 周贵恩[3] 

机构地区：[1]中国科学技术大学应用化学系,合肥230026 [2]中国科学技术大学物理系,合肥230026 [3]中国科学技术大学结构研究开放实验室,合肥230026

出　　处：《低温物理学报》1993年第1期24-28,共5页Low Temperature Physical Letters

摘　　要：制备了名义组分为NbSr_2Nd_(2-x)Ce_xCu_2O_(10-δ)(0.30≤x≤0.70)的多晶系列样品,测定了4.2—290K温度区间的电阻与温度关系,获得了28K的转变温度及T_c=13.2K的超导零电阻,研究了组分、热处理条件对超导电性的影响。Samples with nominal compositions NbSr2Nd2-xCexCu2O10-δ (0.30≤x≤0.70) were prepared. The highest transition temperature has been observed in Nb-1222 which has Tc (onset)=28K and Tc (p=0)=13.2K. The relations between superconductivity and composition as well as sintering conditioon were studied in detail.

关 键 词：超导体 铌化合物 超导性 钽化合物 

分 类 号：O511.2[理学—低温物理]