Macro-thermogravimetrical investigations of the O-2 exchange during phase formation in BSCCO(2223) tapes with Ag, AgMg, AgAu sheaths or SrCO3 or SrZrO3 barriers

Citation
W. Goldacker et al., Macro-thermogravimetrical investigations of the O-2 exchange during phase formation in BSCCO(2223) tapes with Ag, AgMg, AgAu sheaths or SrCO3 or SrZrO3 barriers, IEEE APPL S, 11(1), 2001, pp. 3407-3410
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
10518223 → ACNP
Volume
11
Issue
1
Year of publication
2001
Part
3
Pages
3407 - 3410
Database
ISI
SICI code
1051-8223(200103)11:1<3407:MIOTOE>2.0.ZU;2-P
Abstract
Oxygen exchange of BSCCO with the annealing atmosphere through the tape she ath plays no important role in the formation of BSCCO during the reaction h eat treatment, Change of the oxygen support is expected to be responsible f or reduced superconducting performance of conductors with alloyed shaeth ma terials or modified configurations as BSCCO tapes with AgMg and AgAu sheath s as well as with interfilamentary resistive barriers (AC conductors). In t hose tapes the change in oxygen content was montiored during the first heat treatment by means of a macro-thermogravimetrical method suitable for long sample lengths, The main result is that highly alloyed AgMg sheaths and es pecially barrier tapes hinder significantly the oxygen diffusion during BSC CO(2223) formation. A correlation with the BSCCO phase evolution and the ac hieved transport currents was tried.