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Effects of oxygen content upon phase stability of (Pb,Cu)Sr-2(Y,Ca)Cu2O7+delta

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Author(s)

BJ Mitchell, JTS Irvine

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Abstract

Thermogravimetric analyses of(Pb,Cu) 1212 cuprates show two stages of oxygen loss on heating. If samples are heat-treated at temperatures above the first stage of oxygen lass (@400 in air) they are superconducting. In this study we demonstrate that the second stage of oxygen loss (@900 in air) is associated with decomposition of the 1212 structure, resulting in an ''SrCuO2''-type phase and a 0223-related phase. In most previous studies, temperatures in excess of this decomposition temperature have been utilised to synthesise, sinter or optimise the (Pb,Cu)1212 cuprate.

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Original languageEnglish
Pages (from-to)815-816
Number of pages2
JournalPhysica C: Superconductivity
Volume282-287
Issue number2
DOIs
Publication statusPublished - Aug 1997
EventInternational Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors V - BEIJING
Duration: 28 Feb 19974 Mar 1997

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