Cation ordering in [(Tl, M)O] layers of {open_quotes}1201{close_quotes}-based cuprates: Similarity to ordering in fcc-based alloys
Journal Article
·
· Journal of Solid State Chemistry
- Univ. of Antwerp (Belgium)
- Universite de Caen (France); and others
{open_quotes}1201{close_quotes} Tl-based substituted cuprates of the type (Tl{sub 1-x}M{sub x})Sr{sub 2}CuO{sub 5} have been synthesized for M = Nb, Ta, or W. These materials do not superconduct due to a statistical distribution of some of the M for Cu. The remarkable feature of these materials is the ordering observed between Tl and M in the (Tl{sub 1-x}M{sub x-{epsilon}}O) plane. The type of ordering depends on the composition and shows remarkable similarities with the ordering in Ni-Mo or other so-called 1 1/20 type fcc-based alloys or with the ordering in rocksalt oxides TiO{sub x}. The short-range order, for M=W, can be readily interpreted in terms of a mixing of nano-clusters with two different compositions. These observations of two-dimensional ordering confirm recent ideas about ordering in three-dimensional fcc-based alloys.
- OSTI ID:
- 567599
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 132; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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