块状YBaCaO超导体有效穿透深度的实验估测  

Experimental Estimation of the EfficientPenetration Depth for Bulk Y-Ba-Cu-O Superconductor

作　　者：俞永勤[1] 薛士平[1] 顾元吉[1] 马葭生[1] 

机构地区：[1]华东师范大学物理系

出　　处：《华东师范大学学报（自然科学版）》1990年第3期45-50,共6页Journal of East China Normal University(Natural Science)

摘　　要：采用特殊的频率法装置,对一个逐次研磨为七个不同厚度的 YBaCuO块伏超导体测得振荡周期随温度的变化曲线。对振荡周期的相对变化(△τ/τ_0)与样品厚度(d)的关系曲线分析后,估测此样品的有效穿透深度λ_e为0.12 mm(77K)。Grinded successively to different thicknesses, a bulk Y-Ba-Cu-O superconduc-tor was measured with a special frequeney-method apparature. Seven curves of theoscillatory period versus temperature have been obtained. Analyses on the relativechanges of oscillatory periods with respect to the samples's thickness show that theefficient bulk penetration λ_β is estimated to be 0.12mm(77K).

关 键 词：超导体 有效穿透深度 频率法 

分 类 号：TM262[一般工业技术—材料科学与工程]