Transport critical current densities of partially aligned bulk samples of YBa2Cu3O7−x superconductors

Temperature and magnetic field dependence of critical current densities (Jc) of partially oriented bulk YBa2Cu3O7−x samples are presented. A series of partially oriented samples has been fabricated by repeating the steps of the solid‐state reaction method. X ray and Raman studies detect the orientation of the grains on the surface and in the bulk of the samples. Jc increases with the degree of alignment of the microcrystals, up to a factor of three. The effect of partial bulk‐preferred orientation on the critical current anisotropy is also studied.