Microwave bulk properties of melt-textured high-T_C YBa_2Cu_3O_(7-delta) superconductors

摘要

Bulk properties of a melt-textured YBCO superconductor have been studied using the grazing incidence microwave reflectivity technique. A correlation of the obtained results in the superconducting state with the results in the normal state at room temperature has been found. This shows the possibility of monitoring the quality of the melt-textured samples at room temperature without cooling to critical temperature. Also, the correlation with distribution of a trapped magnetic flux at T = 77 K has been shown.