The mechanism of surface decomposition of Tl- and Hg-containing superconductors

The surface chemistry of various Tl- and Hg-containing superconducting oxides has been studied by high resolution transmission electron microscopy. The mechanism of surface decomposition of these materials is discussed. High chemical reactivity of the Tl-O and Hg-O layers seem to be the main course...

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Bibliographic Details
Main Authors: Zhou, W, Jefferson, D, Liang, W, Peacock, G, Asab, A, Gameson, I, Edwards, P
Format: Conference item
Published: 1998
Description
Summary:The surface chemistry of various Tl- and Hg-containing superconducting oxides has been studied by high resolution transmission electron microscopy. The mechanism of surface decomposition of these materials is discussed. High chemical reactivity of the Tl-O and Hg-O layers seem to be the main course of the decomposition. It is proposed that a surface substitution of Tl and Hg may stabilise the structures without losing superconducting properties. © 1998 Plenum Publishing Corporation.