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Synthetic strategies for new inorganic oxide fluorides and oxide sulfates

Greaves, C., Kissick, J.L., Francesconi, M.G., Aikens, L.D. and Gillie, Lisa .J. (1999) Synthetic strategies for new inorganic oxide fluorides and oxide sulfates. Journal of Materials Chemistry, 9 (1). pp. 111-116. ISSN 09599428

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Abstract

The low temperature fluorination of low dimensional mixed metal oxides can be achieved in a variety of ways to provide new structures and modified electronic characteristics. The potential of these methods for the synthesis of new materials is considered, with particular reference to the fields of copper oxide superconductors and layered manganese oxide colossal magnetoresistance (CMR) phases; in both areas, careful structural and electronic control is necessary for optimised properties. The fluorination mechanisms are quite complex, and this paper describes the synthesis of three new oxide fluorides: La1.9Sr1.1Cu2O5F2, PbSr2YCu3O6F4 and La1.2Sr1.8Mn2O7F2, via processes which involve anion insertion, anion substitution and cation extraction. The use of a related strategy to incorporate more complex anions into oxides is also discussed, and the assimilation of SO42– ions into Bi2O3 to give phases of composition Bi2O3–x(SO4)x is described.

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Schools: School of Applied Sciences
School of Applied Sciences > Materials and Catalysis Research Centre
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Depositing User: Graham Stone
Date Deposited: 06 May 2009 11:02
Last Modified: 22 Sep 2010 12:42
URI: http://eprints.hud.ac.uk/id/eprint/4178

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