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Tl2Ba2Ca2Cu3Oy超导体磁通钉扎能的分布
TIME DEPENDENT CRITICAL CURRENT AT ZERO FIELD FOR SINTERED Tl2Ba2Ca2Cu5Oy SUPERCONDUCTOR
【摘要】 描述一种测量高温超导体磁通钉扎能U0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Tl2Ba2Ca2Cu3Oy的U0值分布(T=78K)。根据所得结果,对已报道的U0值的分散性提出一种新解释。
【Abstract】 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.
【基金】 国家超导技术联合研究开发中心资助的课题
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,1991年06期
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