Premium
AC Losses in a Type‐II Superconducting Slab Including Surface Barrier Effects
Author(s) -
Saif A. G.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221410119
Subject(s) - slab , condensed matter physics , superconductivity , amplitude , magnetic field , field (mathematics) , flux (metallurgy) , magnetic flux , type ii superconductor , surface (topology) , magnitude (astronomy) , physics , materials science , geometry , optics , mathematics , geophysics , quantum mechanics , metallurgy , astronomy , pure mathematics
The structure of a surface barrier, in the frame of the general critical‐state theory, of a type II superconducting slab subjected to parallel magnetic fields (in which the direction of the de bias and ac field are left arbitrary) is studied. The internal magnetic field distribution is developed. In the case of the amplitude of ac field ( b 0 ) less than the magnitude of the dc bias field ( B 0 ), analytic expressions for ac losses are obtained. Maximum values of FL cutting and flux pinning losses are also determined. A good agreement with the previous results (in this case of α 0 = 0 with absence of surface barrier effects) is obtained.