Ag含量对熔融织构YBCO结构及超导电性的影响  

EFFECT OF Ag CONTETS ON THE STRUCTURE AND THE SUPERCONDUCTIVITY OF YBCO PREPARED BY MTG METHOD

作　　者：单玉桥[1] 樊占国[1] 苏大和[1] 张国范[1] 张玉政[1] 赵忠贤[1] 

机构地区：[1]东北大学,中国科学院物理研究所

出　　处：《低温物理学报》1995年第5期380-385,共6页Low Temperature Physical Letters

摘　　要：本文对熔融织构ＹＢＣＤ超导体进行了Ａｇ掺杂研究，Ａｇ掺杂量为０～１８ｗｔ％，并添加了适量的２１１相（Ｙ２ＢａＣｕＯ５）．使ＹＢＣＯ超导体中起钉扎中心作用的２１１相达到２０Ｗｔ％．采用加高熔化温度的ＮｄＢａ２Ｃｕ３Ｏｘ籽晶的办法解决了Ａｇ掺杂引起ＹＢＣＯ晶粒细化的问题，制备了强织构Ａｇ掺杂大块的ＹＢＣＯ超导体．井对其超导电性和Ａｇ的行为进行了研究。Abstract Ag doped YBCO superconductors made by MTG method were studied.In the YBCO matrix,various Ag contents(0-18wt%)and 20wt% of 211 phase (Y2BaCuO5) were added.NdBa2Cu3Ox, crystal seeds with higher peritectic temperature was used to conduct the YBCO crystal orientation and to prevent the crystal grain from fining.The high textured and Ag doped YBCO bluks were prepared,and the Ag behaviour and the superconductivity of the bluks were studied.

关 键 词：YBCO 超导体 熔融 

分 类 号：TM263[一般工业技术—材料科学与工程] O511.2[电气工程—电工理论与新技术]