Influence of temperature and/or field dependences of the E-J power law on trapped magnetic field in bulk YBaCuO
Influence of temperature and/or field dependences of the E-J power law on trapped magnetic field in bulk YBaCuO
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DOI：
10.1109/tasc.2007.902095
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发表时间：
2007-06-01
影响因子：
1.8
通讯作者：
Rezzoug, A.
中科院分区：
文献类型：
--
作者：
Berger, K.;Leveque, J.;Rezzoug, A.
用有限差分方法计算了YBCO块体超导体在脉冲磁场磁化过程中的温度、电流密度和磁场分布。模拟基于考虑通量运动产生的热量的热扩散方程和麦克斯韦方程。用一个与温度和磁场有关的参数的幂定律来描述超导材料的电磁行为。我们分析了存储磁能W-m是如何依赖于温度和场的幂定律的。
Temperature, current density and magnetic field distributions in YBCO bulk superconductor during a pulsed-field magnetization (PFM) process are calculated using the finite difference method. Simulations are based on the heat diffusion equation with account of the heat produced by flux motion, and Maxwell's equations. A power law with temperature and magnetic field dependent parameters is used to characterize the electromagnetic behavior of the superconducting material. We analyze how the stored magnetic energy W-m depends on the temperature and field dependences of the power law.