On the search for a stable BiPbSrCaCuO 2223 polytype

P. Goodman, S. Bulcock, P. Miller, Z. Przelozny

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Abstract

A new crystallographic form of the 2223 polymorph has been identified by means of convergent beam electron diffraction, with a c-axis of 36.8 Å and with the space group F2dd. In contrast to the well-known 2223 polymorph of the compound PbBiSrCaCuO with the c-axis of 37.1 Å and a space group of A2aa/Amaa, which has a limited shelf life, the new form is stable at room temperature and in normal atmospheric conditions, but with a slightly lower Tc of 102.2 K, with an onset temperature of 103.3 K.

Original languageEnglish
Pages (from-to)277-284
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Volume190
Issue number3
DOIs
Publication statusPublished - 1 Jan 1992
Externally publishedYes

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