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Tl₂Ba₂Ca₂Cu₃O_y超导体磁通钉扎能的分布

TIME DEPENDENT CRITICAL CURRENT AT ZERO FIELD FOR SINTERED Tl2Ba2Ca₂Cu₅O_y SUPERCONDUCTOR

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【Author】 DING SHI-YING SHI KE-XIN ZENG CHAO-YANG Yu ZHENG SHI ZHI-XIANG QIu LIDepartmem of Physics, and Laboratory of Solid Microstructure, Nanjing University, Nanjing, 210008

【机构】南京大学物理系固体微结构实验室；南京大学物理系固体微结构实验室南京； 210008；南京； 210008；

【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Tl₂Ba₂Ca₂Cu₃O_y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。更多还原

【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.更多还原