Modeling the Electrophysical Properties of Bulk High-Temperature Superconductors in the Calculations for Magnetic Systems

The paper presents the research results of electrophysical properties model of high-temperature superconductors (HTS) and proves the further development of well-known models based on the simultaneous application of resistive models for induced currents and bound currents models, which are presented by nonlinear hysteresis dependences of the magnetization vs the magnetic field strength. The authors constructs a model for micro currents described by their magnetic moments or specific parameter - the substance magnetization. For this purpose approximating function of effective relative magnetic permeability, similar to the effective electrical resistance for the resistive model, is written. The analysis of the magnetic field of different forms of HTS samples is presented. The authors carried out a comparison of the distribution of the magnetic field on the surface of the samples using the resistive model and the model for the two sources of the magnetic field - current density and magnetization. Also recommendations on the development of experimental setups to determine the parameters of the models, taking into account two sources of the magnetic field within HTS are given.

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