Critical currents of Y1Ba2Cu3O7− δ ceramics

Abstract

The magnetization measurements on a ceramic YBaCuO sample were carried out. The M(H,T) dependence has demonstrated some peculiarities which we suppose to be connected with H j 1, H j 2, H c 1 fields. By analizing the magnetization in the field region between H j 1 and H j 2 within the frame of the critical state model one can found the dependence of the intergranular critical current density on field and temperature.