DOMAIN GROWTH IN PARTIALLY MELTED BULK ND1-XCU3O7-DELTA(XBA2)

Authors
MARELLA M TOMASELLI M GEROLIN F MOLINAS B FABRIS BB MEREGALLI L
Citation
M. Marella et al., DOMAIN GROWTH IN PARTIALLY MELTED BULK ND1-XCU3O7-DELTA(XBA2), Journal of Materials Science, 31(15), 1996, pp. 4047-4053
Citations number
16
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
31
Issue
15
Year of publication
1996
Pages
4047 - 4053
Database
ISI
SICI code
0022-2461(1996)31:15<4047:DGIPMB>2.0.ZU;2-1
Abstract
Domain growth of bulk partially melted Nd1+xBa2-xCu3O7-delta in air wa s found to be severely limited by liquid-phase segregation and losses. The use of a reduced oxygen pressure greatly improved the stoichiomet ry control, leading to the formation of well-developed domains and enh anced superconducting properties. Direct nucleation of Nd1+xBa2-xCu3O7 -delta from the liquid phase by dissolution of Nd2BaCuO5 and a spiral growth mechanism in three perpendicular directions of the platelets st acked in the domains, are suggested.