| 高Jc Tl系2223相银包套带材的磁通钉扎和耗散 |
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| 引用本文： | 孙玉平,张发培,姜建义,胡安明,王迎枫,杜家驹,张裕恒,盛正直.高Jc Tl系2223相银包套带材的磁通钉扎和耗散[J].物理学报,1994,43(7):1166-1171. |
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| 作者姓名： | 孙玉平 张发培 姜建义 胡安明 王迎枫 杜家驹 张裕恒 盛正直 |
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| 作者单位： | (1)美国阿肯色大学物理系; (2)中国科学技术大学结构分析开放研究实验室; (3)中国科学院固体物理研究所 |
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| 基金项目： | 国家超导技术联合研究开发中心资助的课题。 |
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| 摘 要： | 测量了Ｔｌ系２２２３相银包套超导带（Ｊc＝１．５×１０４Ａ·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（Ｈ∥ａｂ面）和磁场垂直于带面（Ｈ⊥ａｂ面）两种情况下，激活能与磁场之间满足幂指数关系：Ｕ0∥＝０．２１ H-0.3(eV),Ｕ0⊥＝０．１5 H-0.4(eV)，其中Ｈ的单位为ｋＧ。
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| 关 键 词： | 高温超导体 带材 磁通钉轧 耗散 |
| 收稿时间： | 1993-08-25 |
FLUX PINNING AND DISSIPATION IN Tl (2223) Ag-SHEATHED TAPE WITH HIGH Jc |
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| SUN YU-PING,ZHANG FA-PEI,JIANG JIAN-YI,HU AN-MING,WANG YING-FENG,DU JIA-JU,ZHANG YU-HENG and Z.Z. SHENG.FLUX PINNING AND DISSIPATION IN Tl (2223) Ag-SHEATHED TAPE WITH HIGH Jc[J].Acta Physica Sinica,1994,43(7):1166-1171. |
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| Authors: | SUN YU-PING ZHANG FA-PEI JIANG JIAN-YI HU AN-MING WANG YING-FENG DU JIA-JU ZHANG YU-HENG and ZZ SHENG |
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| Abstract: | The dependence of resistance on temperature was measured for a Tl (2223) Ag-sheathed tape with high Ｊc(Ｊc＝１．５×１０４Ａ·ｃｍ-2，７７Ｋ，０Ｔ) in an applied magnetic field range from 0 to 0.8T. The experimental results were explained in terms of the thermally activated flux creep model. The relationship between activation energy U0 and the applied magnetic field H oriented parallel to and perpendicular to the ab plane is respectively Ｕ0∥＝０．２１ H-0.3(eV) and Ｕ0⊥＝０．１5 H-0.4(eV). The unit of H is in 0.1T. The dissipation independent of a macroscopic Lorentz force for H and measuring current I lying in the same ab plane and H parallel to I was discussed. |
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