Title :
Influence of Temperature and/or Field Dependences of the E−J Power Law on Trapped Magnetic Field in Bulk YBaCuO
Author :
Berger, K. ; Lévêque, J. ; Netter, D. ; Douine, B. ; Rezzoug, A.
Author_Institution :
Nancy Univ., Nancy
fDate :
6/1/2007 12:00:00 AM
Abstract :
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 depends on the temperature and field dependences of the power law.
Keywords :
Maxwell equations; barium compounds; current density; finite difference methods; flux flow; high-temperature superconductors; magnetisation; yttrium compounds; E-J power law; Maxwell´s equations; YBaCuO - System; bulk superconductor; current density; electromagnetic behavior; finite difference method; flux motion; heat diffusion equation; pulsed-field magnetization process; stored magnetic energy; trapped magnetic field; Current density; Electromagnetic fields; Finite difference methods; Magnetic fields; Magnetization; Maxwell equations; Superconducting materials; Temperature dependence; Temperature distribution; Yttrium barium copper oxide; Bulk YBaCuO; magnetization; modelling; stored magnetic energy; thermal coupling;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.902095
