Numerical analysis reveals hysteretic and AC losses in high Tc superconductors, suggesting implications for material performance.
The complex AC susceptibility (c) of high Tc superconducting materials has been described in terms of hysteretic and AC losses. By including both flux creep and flux flow resistivities in the expression of the flux diffusivity, induction profiles have been numerically calculated from the non linear flux diffusion equation. The imaginary part of c has been evaluated as function of temperature, frequency and amplitude of the applied magnetic field. The role of pinning and AC losses occuring in high Tc materials is discussed.
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F. et al. (1996) studied this question.
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