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

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

3028

Lastpage

3031

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.902095

Filename

4278052