第二类超导体输运临界电流密度的一个临界态模型计算  

A Critical State Model Calculation for the Transport Critical Current Density of Type Ⅱ Superconductors

作　　者：胡行[1] 王振峰[1] 刘清青[1] 贾瑜[1] 李新建[1] 

机构地区：[1]郑州大学物理工程学院材料物理实验室,郑州450052

出　　处：《低温与超导》2000年第1期33-38,共6页Cryogenics and Superconductivity

摘　　要：给出了第二类超导体临界电流密度随样品尺寸及外加磁场变化的一个临界态模型计算。计算中考虑了样品中混合态与迈斯纳态共存的情况。用该模型对Tl2Ba2Ca2Cu3O10样品的实验测量结果进行了模拟计算,并讨论了有关问题。A critical state model calculation was proposed for the dependence of the transport critical current density on the applied magnetic field and the thickness of a slab shape type Ⅱ superconducting sample. The coexistence of Meissner state range with vortex state range in a sample was considered in this model calculation. The calculation result was discussed and compared with experimental measured transport critical current density of Tl 2Ba 2Ca 2Cu 3O 10 samples.

关 键 词：第二类超导体 临界态模型 临界电流密度 

分 类 号：TM260.14[一般工业技术—材料科学与工程]