COMBINATION OF CEO2 AND PTO2 DOPING FOR STRONG ENHANCEMENT OF J(C) UNDER MAGNETIC-FIELD IN MELT-TEXTURED SUPERCONDUCTOR YBACUO

Authors
DELAMARE MP HERVIEU M WANG J PROVOST J MONOT I VERBIST K VANTENDELOO G
Citation
Mp. Delamare et al., COMBINATION OF CEO2 AND PTO2 DOPING FOR STRONG ENHANCEMENT OF J(C) UNDER MAGNETIC-FIELD IN MELT-TEXTURED SUPERCONDUCTOR YBACUO, Physica. C, Superconductivity, 262(3-4), 1996, pp. 220-226
Citations number
18
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
262
Issue
3-4
Year of publication
1996
Pages
220 - 226
Database
ISI
SICI code
0921-4534(1996)262:3-4<220:COCAPD>2.0.ZU;2-7
Abstract
A combination of CeO2 and PtO2 doping has been studied in melt-process ed YBa2Cu3O7-x. This study was carried out using an optimized well est ablished MTG process. The cerium-platinum doped samples exhibit a high fishtail effect with a J(c) of 4.3 x 10(4) A/cm(2) under an applied f ield of 1 T. Microstructural and nanostructural studies have been perf ormed. The 211 and BaCeO3 inclusions are a few micrometers wide and th e formation of a metastable nanocrystalline phase (Y4Ba4)Cu-8-x(Ce,Pt) (x)O-20+delta related to the perovskite is detected. The 123 grains sh ow no specific extended defect generated by the doping process. The re lationship between structure and properties are discussed.