期刊論文

標題 Direct Lorentz force measurement for YBa2Cu3O7-δ superconductor
學年 98
學期 2
出版(發表)日期 2010/03/01
作品名稱 Direct Lorentz force measurement for YBa2Cu3O7-δ superconductor
作品名稱(其他語言)
著者 Chan, W.C.; Chiang, C.H.; Hsu, Y.J.
單位 淡江大學物理學系
出版者
著錄名稱、卷期、頁數 cryogenics 50(4), pp.292-294
摘要 This study introduced a novel method using a modified helium gas closed cycle cryogenic system to measure the force acting on a C-shaped magnet by a YBCO superconductor with bias current as a function of temperature. The results showed that the measured force agrees with Lorentz force due to the bias current for normal conductor at temperature higher than the superconducting transition temperature, as expected. However, under a temperature at the beginning of the superconducting transition region, the measured force became larger than the expected Lorentz force. As temperature further decreased, the measured force gradually dropped to zero. A qualitative argument based on the Bean’s model was given to explain the peak in the measured force at the beginning of the transition temperature.
關鍵字 Lorentz force;YBCO superconductor;Meissner effect;Flux pinning
語言 英文
ISSN 0011-2275;1879-2235
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度
國別 英國
公開徵稿
出版型式 ,電子版,紙本