Self-heating and ac losses in superconductors

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Abstract
Self-heating induced by ac loss in superconductors under different thermal boundary conditions has been investigated numerically. Self-heating effect results in non-uniform distributions of temperature and critical current density in superconductors. The self-heating effect is also sensitive to the thermal boundary conditions. A low-field instability of the critical current density is found when the external magnetic field decreases to near zero after fully penetrating the superconductors, leading to low-field flux jumps as observed in MgB2 and YBa2Cu3O7 superconductors.
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Author(s)
Cheng, CH
Zhao, Yong
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Publication Year
2003
Resource Type
Journal Article
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UNSW Faculty