High pressure oxygenation in melt textured NdBa2Cu3O7: Identification of pinning mechanisms

Authors
Puig, T Obradors, X Martinez, B Sandiumenge, F Gomis, V Alonso, JA
Citation
T. Puig et al., High pressure oxygenation in melt textured NdBa2Cu3O7: Identification of pinning mechanisms, IEEE APPL S, 9(2), 1999, pp. 2054-2057
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
10518223 → ACNP
Volume
9
Issue
2
Year of publication
1999
Part
2
Pages
2054 - 2057
Database
ISI
SICI code
1051-8223(199906)9:2<2054:HPOIMT>2.0.ZU;2-5
Abstract
A competing effect inducing both an enhancement of interface pinning and ag ing of the critical currents has been established in NdBa2Cu3O7-delta /Nd4B a2Cu2O10 (Nd123/422) melt-textured ceramic composites upon high oxygen pres sure annealing. It is suggested that Nd123/422 interfaces are enriched in a ntisite defects, which are properly oxygenated only upon high PO2 annealing , Additional evidence for the enhanced oxygenation is gained from the obser vation of a consequent decrease of the field induced anomaly at intermediat e fields.