Diamagnetic susceptibility and magnetic flux creep in the YBa2Cu3O<i>x</i> ceramic

Frequency and field dependence of the intergrain losses in the diamagnetic susceptibility of the YBa2Cu3Ox ceramic was studied experimentally. It is shown that the results obtained can be described by means of a critical state equation within the framework of Anderson’s magnetic flux creep model. The critical current density and the pinning potential have been determined as functions of temperature and magnetic field.

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