THE FORMATION OF YBA2CU3O7-X IN MELT-TEXTURE HEAT-TREATMENTS

Authors
GOLDEN SJ YAMASHITA T BHARGAVA A BARRY JC MACKINNON IDR
Citation
Sj. Golden et al., THE FORMATION OF YBA2CU3O7-X IN MELT-TEXTURE HEAT-TREATMENTS, Physica. C, Superconductivity, 221(1-2), 1994, pp. 85-90
Citations number
10
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
221
Issue
1-2
Year of publication
1994
Pages
85 - 90
Database
ISI
SICI code
0921-4534(1994)221:1-2<85:TFOYIM>2.0.ZU;2-P
Abstract
A study of the bulk formation of YBa2Cu3O7-x from the Y2BaCuO5 plus li quid regime reveals that phase formation occurs at appreciable rates b elow 950-degrees-C in air. This result has been observed for phase-pur e YBa2Cu3O7-x starting material given two types of heat treatment: hel d at 1100-degrees-C and slow-cooled from 1030-degrees-C at 6-degrees-C /h or heat-treated isothermally. Differential thermal analysis, with a cooling rate of 10-degrees-C/min indicates that the degree of underco oling for the peritectic formation of YBa2Cu3O7-x is greater than 100- degrees-C.