Multi-seeded melt crystallization of YBCO bulk material for cryogenic applications

Authors
Schatzle, P Krabbes, G Stover, G Fuchs, G Schlafer, D
Citation
P. Schatzle et al., Multi-seeded melt crystallization of YBCO bulk material for cryogenic applications, SUPERCOND S, 12(2), 1999, pp. 69-76
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
ISSN journal
09532048 → ACNP
Volume
12
Issue
2
Year of publication
1999
Pages
69 - 76
Database
ISI
SICI code
0953-2048(199902)12:2<69:MMCOYB>2.0.ZU;2-A
Abstract
YBCO bulk materials were crystallized by a multi-seeded melt growth process . Up to four biaxial oriented Sm-123 seeds were placed on the top of rectan gular shaped YBCO bars (up to 100 x.40 x 15 mm(3)). The oriented grown sing le grains are joined by partially coherent grain boundaries with an improve d current transport capability and high levitation forces with overall valu es of 55-65 N. Segregation of nonsuperconducting rest melt and microcracks limit the current transport across the grain boundary.