Title :
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
fDate :
6/1/1997 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
