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

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3509

Lastpage

3512

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 T_c

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 T_c; 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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919820

Filename

919820