Effects of Sm/sub 2/BaCuO/sub 5/ addition on the melt-textured-growth YBa/sub 2/Cu/sub 3/O/sub y/

Effects of Sm/sub 2/BaCuO/sub 5/ addition on the microstructure and superconducting properties of the melt textured-growth YBa/sub 2/Co/sub 3/O/sub y/, have been investigated in this paper. Sm/sub 2/BaCuO/sub 5/ addition decreases the crystal domain size and thickness of plate grains in domains, and increases the intragrain critical current densities. The peak effect in the magnetization curve is observed in the samples with Sm/sub 2/BaCuO/sub 5/ additions. The levitation force and force relaxation with time were measured and compared for bulks with and without the Sm/sub 2/BaCuO/sub 5/ addition.