Determination of the spatial length scale of the magnetic field distribution in YBa2Cu3O7 ceramics and Bi2Sr2CaCu2O8 crystal

Inhomogeneity of the intrinsic magnetic field in superconducting YBa2Cu3OXcompounds as revealed by a rare-earth EPR probe

“…Davidov et al [7] emphasize that in ceramic superconductors a variety of possible mechanisms for flux distribution exists.…”

“…In the decoration experiments, however, they depend not only on the temperature but on other detection conditions, such as the frequency and the value of the modulation field, the sweep direction of the applied magnetic field, etc. This EPR technique in reference to HTSCs, first presented by Rakvin et al [4,5], is being actively used and developed (see [6][7][8][9][10][11], for instance).…”