Pinning Potential and Critical Current Densities in Powder Melting Processed Y(Ho)BCO Samples  

作　　者：LIU Peng LI Jingwei YIN Bo-GUO Shuquan ZHAO Zhongxian FENG Yong ZHOU Lian 

机构地区：[1]National Laboratory for Superconductivityt Institute of Physics,Academia Sinicu,Bering 100080 [2]Department of Physics,Shanxi Normal University,Xi'an 710062 [3]Northwestern Institute£or Non-ferrous Metal Researcht,Baoji 721014

出　　处：《Chinese Physics Letters》1993年第11期688-691,共4页中国物理快报（英文版）

基　　金：Supported by the National Center for Research and Development on Superconductivity of China.

摘　　要：M&gnetic relaxation and magnetization of the powder melting Y_(1-x)Ho_(x)Ba_(2)Cu_(3)O_(7)(x=0.2,0.4 and 0.6)samples have been measured at the temperature of 70K.The pinning potential U and magnetization critical current density J_(c) have been obtained according to the Anderson-Kim model and Bean model.It is found that both U and J_(c) were in^uenced by doping Bb.In the sample with x=0.4 the pinning potential U has a value of 3.2 eV when the Held is equal to 1 kG and parallel to c-axis,which is the highest one we have known in the high Tc superconductors.

关 键 词：MAGNETIZATION x=0 RELAXATION 

分 类 号：O17[理学—数学]