ac方法高Tc超导体晶间和晶内临界电流密度的确定

Determination of Critical Currents in Intergrain and Intragrain in Granular Superconducting Ceramic

文中基于临界态Bean模型，给出了用交流磁测量结果确定高Tc颗粒超导体晶间和晶内Bean参数Jc的方法。并对（BiPb）2Sr2Ca2CuOy体材样品做了测量和计算。

Based on bean critical state model, the critical current densities in intergrain and intragrain in high temperature granular superconducting ceramics have been determined by ac susceptibility measurements. Data on (BiPb)2Sr2Ca2Cu3Oy sample have been given.