The occurrence of 1212-type phase in the Pb-Sb-Sr-Ca-Y-Cu-O system

Samples of nominal composition Pb 1− x Sb x Sr 2Ca 1− y Y y Cu 2O 7− δ with 0 ≤ x, y ≤ 1, synthesized at 900 °C in air, argon and oxygen, have been investigated. None of the samples sintered in air or in oxygen was superconducting. Some of the samples which were prepared in argon exhibited supercond...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 195; pp. 61 - 64
Main Authors Widder, W., Bauernfeind, L., Franz, M., Braun, H.F.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Lausanne Elsevier B.V 10.05.1993
Elsevier
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Occurrence, potential candidates
Physics
Superconductivity
Antimony Calcium Copper Lead Strontium Oxides Mixed
Preparation
Superconductivity
Inorganic compound
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Summary:Samples of nominal composition Pb 1− x Sb x Sr 2Ca 1− y Y y Cu 2O 7− δ with 0 ≤ x, y ≤ 1, synthesized at 900 °C in air, argon and oxygen, have been investigated. None of the samples sintered in air or in oxygen was superconducting. Some of the samples which were prepared in argon exhibited superconductivity. The superconducting signal was not due to the “1212-phase”, but probably due to a “2213-phase”.
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(93)90687-I