CERAMIC PROCESSING, DOPANT-SITE OCCUPANCIES AND SUPERCONDUCTING PROPERTIES OF YBA2(CU1-XFEX)3OZ

Authors
KULKARNI RG KUBERKAR DG BALDHA GJ BICHILE GK
Citation
Rg. Kulkarni et al., CERAMIC PROCESSING, DOPANT-SITE OCCUPANCIES AND SUPERCONDUCTING PROPERTIES OF YBA2(CU1-XFEX)3OZ, Physica. C, Superconductivity, 217(1-2), 1993, pp. 175-181
Citations number
10
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
217
Issue
1-2
Year of publication
1993
Pages
175 - 181
Database
ISI
SICI code
0921-4534(1993)217:1-2<175:CPDOAS>2.0.ZU;2-3
Abstract
We provide a recipe to process oxygen-rich Fe-doped YBa2Cu3O7-delta sa mples, which display unusual Fe-dopant site occupancies and supercondu cting properties. Specifically, we observe substantial occupation of a chain-associated quasi-octahedral site (site E). Room-temperature agi ng of such samples at ambient conditions leads to the extinction of si te E and a concomitant growth of other chain sites, and an increase in T(c). The aged samples display the usual Fe-dopant site distribution and T(c)'s reported by numerous groups for this superconductor.