摘要
测量了Ｔｌ系２２２３相银包套超导带（Ｊ＿ｃ＝１．５×１０￣４Ａ＊ｃｍ￣（－２），７７Ｋ，０Ｔ）在０－０．８Ｔ磁场下电阻转变展宽，实验结果引用热激活磁通蠕动模型加以解释。磁场平行于带面（Ｈａｂ面）和磁场垂直于带面（ＨＪ⊥ａｂ面）两种情况下，激活能与磁场之间满足幂指数关系：Ｕ＿（０）＝０．２１，其中Ｈ的单位为ｋＧ。对Ｈａｂ面，ＨＩ时出现的与宏观洛仑兹力无关的耗散进行了讨论。
he dependence of resistance on temperature was measured for a Tl(2223)Ag-sheathed tape with high J_c(J_c=1.5 × 10￣4A/cm￣2,77K,0T)in an applied mag-netic field range from 0 to 0.8T,The experimental results were explained in termsof the thermally activated flux creep model.The relationship between activationenergy U_0 and the applied magnetic field H oriented parallel to and perpendicularto the ab plane is respectively U_(0
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第7期1166-1171,共6页
Acta Physica Sinica
基金
国家超导技术联合研究开发中心资助的课题。
