Abstract
The experimental and theoretical investigations of microwave losses (ML) in HTSC thin films are carried out. It is shown theoretically that ML in the maximum of the magnetic componentB 1 are essentially larger than those in the maximum of the electric componentE 1. This is because eddy currents make much more substantial contribution to ML as compared to conventional conductivity currents. The consequence of this is the angular dependence of ML with respect to theB 1 field direction which was experimentally observed. The angular dependences of ML with respect to theB 0 field direction for both low and highB 0 values were also investigated. The majority of experimental data can be well explained within the mixed model which predicts the existence of a critical state in inter- and intragranular Josephson medium.
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