Influence of temperature on stability of trapped flux magnets

摘要

Trapped flux in YBCO plates has an inherent dependence on temperature. The electro-magnetic current density and thermal specific heat are both highly dependent upon the temperature. Modeling and exper-imental data investigate the nature of a YBCO sample that has a heat pulse forced upon a trapped mag-netic field by measuring the change in the magnetic field before and after the energy input. The experimental data suggest interesting trends that are further explained with models. An analytical approach and FEA simulations are performed to discover the physics behind the experimental data. By comparing the data, the temperature dependence on the YBCO sample is further investigated and illustrated.