Title :
Effects of Sm/sub 2/BaCuO/sub 5/ addition on the melt-textured-growth YBa/sub 2/Cu/sub 3/O/sub y/
Author :
Zhang, H. ; Gong, S.M. ; Cai, C.B.
Author_Institution :
Inst. of Metall., Acad. Sinica, Shanghai, China
fDate :
6/1/1997 12:00:00 AM
Abstract :
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.
Keywords :
Meissner effect; X-ray diffraction; barium compounds; ceramics; critical current density (superconductivity); electron probe analysis; grain growth; high-temperature superconductors; magnetic levitation; magnetisation; melting; recrystallisation texture; samarium compounds; scanning electron microscopy; sintering; yttrium compounds; Sm/sub 2/BaCuO/sub 5/; Sm/sub 2/BaCuO/sub 5/ addition; YBa/sub 2/Cu/sub 3/O; YBa/sub 2/Cu/sub 3/O/sub y/; crystal domain size; force relaxation; intragrain critical current densities; levitation force; magnetization curve; melt-textured-growth; microstructure; peak effect; plate grains; superconducting properties; Cooling; Critical current density; Force measurement; Force sensors; Levitation; Magnetization; Powders; Scanning electron microscopy; Temperature; Time measurement;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
