金属基高温超导体复合材料临界电流密度的估算  

ESTIMATE OF CRITICAL CURRENT DENSITY ON HIGH TEMPERATURE SUPERCONDUCTOR COMPOSITE OF METAL MATRIX

作　　者：丁世英[1] 曾朝阳[1] 

机构地区：[1]南京大学物理系,南京210008

出　　处：《低温物理学报》1991年第1期41-44,共4页Low Temperature Physical Letters

摘　　要：对由高温超导体微块嵌于金属基中而形成的复合体的临界电流密度 J_c 进行了估算.结果表明,J_c 与金属基的电导率、超导体的非等轴性以及复合体中超导体的含量成正比.在判据 1μv/cm 和金属基电阻率为 10^(-7)Ωcm 的条件下,77K 和零场下的 J_c 值可超过10~4A/cm^2.指出了复合体其他的优点.The critical current density Jc for high temperature superconductor composite block embedded in metal matrix is estimated.The calculation shows that the Jc is proportional to the metal conductivity,the geometric anisotropy of the high temperature superconductor and the space of the block.With the criterion being 1μv/cm and the resistivity being 10-8cm,the Jc is higher than 104A/cm2 at 77 K and zero applied field.The additional advantages of the composite are discussed as well.

关 键 词：金属基 超导体 复合材料 JC 

分 类 号：TM26[一般工业技术—材料科学与工程]