INVESTIGATION OF CERTAIN CRYSTAL-GROWTH CHARACTERISTICS IN MELT-TEXTURED YBCO SUPERCONDUCTOR USING WAVELENGTH DISPERSIVE-X-RAY ANALYSIS

Authors
CHOW JCL FUNG PCW ZHANG YH
Citation
Jcl. Chow et al., INVESTIGATION OF CERTAIN CRYSTAL-GROWTH CHARACTERISTICS IN MELT-TEXTURED YBCO SUPERCONDUCTOR USING WAVELENGTH DISPERSIVE-X-RAY ANALYSIS, Chemical physics letters, 234(1-3), 1995, pp. 127-132
Citations number
31
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
234
Issue
1-3
Year of publication
1995
Pages
127 - 132
Database
ISI
SICI code
0009-2614(1995)234:1-3<127:IOCCCI>2.0.ZU;2-6
Abstract
Using wavelength dispersive X-ray analysis, it is found that some non- superconducting Y2BaCuO5 (Y-211) grains in the melt-textured YBCO supe rconductor demonstrate uneven distribution of Y atoms. Such a phenomen on can be explained by diffusion of Y atoms between the YBa2Cu3Oy (Y-1 2S)/liquid interface, the Y-211/liquid interface and the Y-211 grain i nside. Moreover, 'gaps'-generated due to different degrees of contract ions of the matrix and Y-211 grains are observed. 'Cavass' which is su perconducting but appears like Y-211 grain is observed and reported.