Fabrication and characterization of melt-processed YBCO

Author

Sengupta, S. ; Corpus, J. ; Gaines, J.R., Jr. ; Todt, V.R. ; Zhang, X.F. ; Miller, D.J. ; Varanasi, C. ; McGinn, P.J.

Author_Institution

Supercond. Components, Columbus, OH, USA

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

1723

Lastpage

1726

Abstract

Large domain YBCO are fabricated by using a melt processing technique for magnetic levitation applications. A Nd/sub 1+x/Ba/sub 2-x/Cu/sub 3/O/sub y/, seed is used to initiate grain growth and to control the orientation of YBCO grains. Samples as large as 50 mm diameter have been fabricated by utilizing this method. Microstructural studies reveals two distinct regions in these levitators due to different growth mechanisms along the a/b and c axes. Some initial result on the mass production of these; levitators are also reported.

Keywords

barium compounds; ceramics; grain growth; high-temperature superconductors; melting; recrystallisation texture; yttrium compounds; 50 mm; Nd/sub 1+x/Ba/sub 2-x/Cu/sub 3/O/sub y/ seed; NdBa/sub 2/Cu/sub 3/O; YBCO grains; YBa/sub 2/Cu/sub 3/O/sub 7/; a/b axes; c axes; characterization; fabrication; grain growth; growth mechanisms; large domain YBCO; magnetic levitation applications; melt processing technique; melt-processed YBCO; microstructural studies; Calcination; Fabrication; Magnetic levitation; Materials science and technology; Melt processing; Powders; Superconducting magnetic energy storage; Superconducting magnets; Superconductivity; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.620912

Filename

620912