摘要
描述一种测量高温超导体磁通钉扎能U_0及其分布的新方法,此方法主要之点是测量磁化后样品的零场临界电流随时间的变化,利用这一方法测量Tl_2Ba_2Ca_2Cu_3O_y的U_0值分布(T=78K)。根据所得结果,对已报道的U_0值的分散性提出一种新解释。
A new method determining the distribution of flux pinning energy U0, is described. The method is mainly the measurement of time dependent zero field critical current for sintered high temperature superconductor magnetized in applied field. By means of this method, the Uo distribution of Tl2Ba2Ca2Cu3O_y at 78K is obtained. Based on the experimental result, the dispersion of reported U0 is discussed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第6期985-989,共5页
Acta Physica Sinica
基金
国家超导技术联合研究开发中心资助的课题
