频率法在高温超导体中的应用  

THE APPLICATION OF FREQUENCY-METHOD TO THE HIGH TEMPERATURE SUPERCONDUCTORS

作　　者：俞永勤[1] 薜士平 马葭生[1] 顾元吉[1] 曹尔弟 王梅生[1] 朱传征 林迪万 吴正[1] 

机构地区：[1]华东师范大学物理系

出　　处：《低温与超导》1989年第4期39-43,共5页Cryogenics and Superconductivity

摘　　要：本文描述适用于频率法的改进振荡器电路和二个变型电感线圈。YBaCuO 样品中超导相含量和 BiSrCaCuO 样品中两相超导成分都在 F—T 曲线中有反映。使用一种变型线圈,粗略地估测了块状样品的有效穿透深度。实验表明,频率法很适用干块状高 T_c 超导体的研究。In this paper we describe a improved circuit of oscillator and t-wo modified inductance coils which are well used in frequency- method. The superconducting phase contents of Y Ba CuO samples and two superconducting phases in BiSrCaCuO samples are reflacted at F-T curves.The efficient penetration depth of a bulk sample was estimated roughly by using one modified coil. The experiments show that the freguency-method is adeguate for reserching bulk high-Tc superconduct ors.

关 键 词：超导体 高温超导体 频率法 

分 类 号：TM26[一般工业技术—材料科学与工程]