The critical state model has been used to study the influence of transport current on the measured magnetization of type II superconductors. For the flux-pinned condition, it is shown that the field distribution within the sample can be described in terms of a number of regions in H−1 space. The boundaries of these regions have been established and the corresponding dependence of the magnetization on field (at fixed finite current) and current (at fixed applied field) has been calculated.
Inversion mechanism for the transport current in type-II superconductors