Intergranular AC loss in high-temperature superconductors
作者： K.-H. Müller , A.J. Pauza
DOI: 10.1016/0921-4534(89)90342-0
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摘要: Abstract The AC loss and the real part of permeability at low frequency magnetic field were measured for a sintered polycrystalline YBaCuO sample. dependence on amplitude superimposed DC is explained in terms critical state model which accounts intergranular intragranular effects. pinning force density local derived from potential Josephson vortex granular superconductor. large losses are mainly due to bulk while caused by surface barriers flux entry exit as well annihilation negligible.
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