银基体对超导氧化物体材料J_c测量的影响  

INFLUENCE OF SILVER BASE ON J_c MEASUREMENT OF OXIDE SUPERCONDUCTORS

作　　者：戴远东[1] 

机构地区：[1]北京大学物理系,北京100871

出　　处：《低温物理学报》1993年第1期29-32,共4页Low Temperature Physical Letters

基　　金：国家超导联合研究开发中心资助

摘　　要：考虑到银基体的电阻率和银基体与超导体材料间的接触电阻,给出了电流从银基体逐渐流入超导材料所满足的方程和沿传输方向的电流分布,估计了在短样的J_c测量中接触电阻对测量结果的影响和判别方法。Considering the resistivity of a silver base and the contact resistance of a silver base with a bulk superconductor, the equation of the current gradually flowing the superconductor from the silver base and the current distribution along the transport direction were given. The author estimated the influence of the contact resistance on Jc measurement for a short sample. The criterion also was given in this paper.

关 键 词：超导体 氧化物 临界电流 银 

分 类 号：O511.2[理学—低温物理]