魏旺水
,
罗乐
,
张永红
,
龚尚敏
,
章岚
,
胡素辉
材料研究学报
在无特殊设计的温度梯度条件下,用熔融织构法制备了高电流密度的YBCO(123)块样。组织分析表明,样品由厚度约为10μm 的薄片晶粒,按c 轴相互平行的方式定向排列而成,晶粒长度达1cm。在77K,5T 下,直流传输电流密度达40kA/cm~2。钉扎势(77K,1T)为0.2eV 左右。
关键词:
高T_c超导体
,
melting textured growth
,
critical cuttent density.
FAN Zhanguo
,
JI Chunlin
,
WANG Kuihan
,
CUI Chuanmeng
,
LIU Sulan
,
Northeast University of Technology
,
Shenyang
,
China
金属学报(英文版)
A unidirectional reaction for synthesis of the high T_c superconductor YBa_2Cu_3O_x has been proposed, Its T_c is 90-94.5 K and △T is 1 K. The phase relationships in the system Y_2BaCuO_5-Y_2Cu_2O_5-CuO-YBa_2Cu_3O_x were studied and discussed.
关键词:
unidirectional reaction
,
null
,
null
