Structural variants of <script type="math/tex">Ca_{0.85}CuO_{2}(Ca_{5+x}Cu_{6}O_{12})</script>

Milat, O.; Van Tendeloo, G.; Amelinckx, S.; Babu, T.G.N.; Greaves, C.

doi:10.1016/0022-4596(92)90205-A

Title

Structural variants of $Ca_{0.85}CuO_{2}(Ca_{5+x}Cu_{6}O_{12})$

Author

Milat, O.

Van Tendeloo, G.

Amelinckx, S.

Babu, T.G.N.

Greaves, C.

Abstract

The structure of Ca0.85CuO2 was reexamined by means of electron diffraction and electron microscopy using the newly developed method of selective imaging in intergrowth structures in which the two substructures are based on different sublattices. The results of previous work are confirmed. Moreover, it is shown that two stacking variants and their twin related structures occur in the calcium substructure. The copper-oxygen substructure occurs in one variant only; it is often modulated by the various calcium arrangements, leading to phase disorder in its modulation pattern. It is shown that the ribbons of CuO4 clusters are presumably tilted with respect to the (010) plane.

Language

English

Source (journal)

Journal of solid state chemistry. - London

Publication

London : 1992

ISSN

0022-4596

DOI

10.1016/0022-4596(92)90205-A

Volume/pages

101 :1 (1992) , p. 92-114