Melt processing of superconducting YBa2Cu3O7-partial derivative thick films on AgPd substrates via atmosphere control

Trevor Shields, John Abell, Timothy Button, W Haessler, G Risse, K Fischer, L Schultz

Research output: Contribution to journalArticle

Abstract

Superconducting YBa2Cu3O7-partial derivative (123) c-axis textured thick films have been prepared on AgPd substrates by a modified screen printing and melt processing method. Heating the samples in an inert gas (N-2) has enabled melt processing to take place at lower temperatures than conventional YBCO thick film processing in O-2. The atmosphere is switched to p(O-2) = 100% at peak temperature in order to initiate the crystallisation of the 123 phase. Variation in properties of the films with changes in the peak processing temperature has been investigated. Samples processed at peak temperatures of greater than or equal to 980 degreesC show better microstructures and superconducting properties than those processed at lower temperatures. Quenching experiments have also been performed in order to investigate further the phase relationships and crystallisation mechanism of the 123 phase. (C) 2000 Kluwer Academic Publishers.
Original languageEnglish
Pages (from-to)6105-6110
Number of pages6
JournalJournal of Materials Science
Volume35
Issue number24
Publication statusPublished - 1 Dec 2000

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