摘要
同时测量了一些 Y-Ba-Cu-O 超导样品的交流磁化率、正常态电阻和临界电流密度。计算了交流磁化率的虚部极大值与实部之比。结果表明,x<sub>max</sub><sup>″</sup>/x′和ρ<sub>n</sub> 小的样品,临界电流密度大。
The a.c.susceptibility(x′),nourmal state resistivity(ρ_n)and critical currentdensity(J_c)of super conductive Y-Ba-Cu oixde were measured.The raito of imaginarypart maximum(X″_(max))to real part(x′)of a.c.susceptibility was calculated.The results showthat the sample which has lower x″_(max)~/x′ratio and ρ_n possess higher J_(co)
关键词
超导体
氧化物
电流密度
磁化率
Y-Ba-Cu oxide
A.C.susceptibitity
critical current demsity
