Title :
Fabrication of melt-processed RE-Ba-Cu-O bulk superconductors with high densities
Author :
Sakai, N. ; Ogasawara, K. ; Inoue, K. ; Ishihara, D. ; Murakami, M.
Author_Institution :
Superconductivity Res. Lab., Int. Superconductivity Technol. Center, Tokyo, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
We have studied the formation mechanisms of pores in melt-processed RE-Ba-Cu-O (RE: rare earth element). It was found that the formation of pores was ascribed either to the residual inert gas in the atmosphere or the oxygen bubble generated during the peritectic decomposition. The employment of pure oxygen atmosphere during the melt-process led to the fabrication of a dense (Sm,Gd)-Ba-Cu-O-Ag bulk with high Tc
Keywords :
barium compounds; bubbles; density; gadolinium compounds; high-temperature superconductors; melt texturing; porosity; samarium compounds; silver; superconducting transition temperature; SmGdBa2Cu3O7:Ag; dense (Sm,Gd)-Ba-Cu-O-Ag bulk; fabrication; formation mechanisms; high Tc; high densities; melt-processed RE-Ba-Cu-O bulk superconductors; melt-processing; peritectic decomposition; pores; pure oxygen atmosphere; rare earth; residual inert gas; Atmosphere; Employment; Fabrication; High temperature superconductors; Mechanical factors; Microstructure; Powders; Superconducting magnets; Superconductivity; Thermal stresses;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
