Title :
Modified growth mechanism in directionally solidified YBa/sub 2/Cu/sub 3/O/sub 7/
Author :
Pinol, S. ; Sandiumenge, F. ; Martinez, B. ; Vilalta, N. ; Granados, X. ; Gomis, V. ; Galante, F. ; Fontcuberta, J. ; Obradors, X.
Author_Institution :
Inst. de Ciencia de Mater., CSIC, Barcelona, Spain
fDate :
6/1/1995 12:00:00 AM
Abstract :
Minute amounts of CeO/sub 2/ additions have a strong effect on the solidification path, physicochemical parameters and final size distribution of Y/sub 2/BaCuO/sub 5/ (211) precipitates of directionally solidified YBa/sub 2/Cu/sub 3/O/sub 7/ (123). Inductive and transport critical currents density (J/sub c/) measurements indicate a clear increase with CeO/sub 2/ addition.<>
Keywords :
barium compounds; critical current density (superconductivity); directional solidification; high-temperature superconductors; precipitation; yttrium compounds; CeO/sub 2/; CeO/sub 2/ additions; Y/sub 2/BaCuO/sub 5/; Y/sub 2/BaCuO/sub 5/ precipitates; YBa/sub 2/Cu/sub 3/O/sub 7/; directional solidification; growth; inductive critical current density; physicochemical parameters; transport critical current density; Annealing; Bars; Ceramics; Critical current; Crystallization; Displays; Furnaces; Optical polarization; Superconductivity; Temperature;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
