RECOVERY OF SUPERCONDUCTIVITY IN THE WATER DEGRADED YBCO SAMPLES

Authors
REKHI S BHALLA GL TRIGUNAYAT GC
Citation
S. Rekhi et al., RECOVERY OF SUPERCONDUCTIVITY IN THE WATER DEGRADED YBCO SAMPLES, Physica. C, Superconductivity, 307(1-2), 1998, pp. 51-60
Citations number
25
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
307
Issue
1-2
Year of publication
1998
Pages
51 - 60
Database
ISI
SICI code
0921-4534(1998)307:1-2<51:ROSITW>2.0.ZU;2-M
Abstract
The recovery of superconductivity in water degraded YBa2Cu3O7-delta sa mples has been studied by subjecting them to heat treatments. The poss ible recovery of superconductivity has been estimated through structur al, electrical, magnetic and morphological investigations. The results reveal the transformation of secondary phases formed during degradati on into YBCO phase. The presence of some additional phases of YBCO, po ssibly arising from deficiency of the constituent elements resulting f rom degradation/lack of proper reaction between the secondary phases, is also observed. The heat treatment carried out on a sample after pul verising it led to full recovery of superconductivity in it. A possibl e mechanism for the observed recovery of superconductivity has been su ggested. (C) 1998 Elsevier Science B.V. All rights reserved.