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Preparation and Characterization of Several Conducting Transition Metal Oxides

Published online by Cambridge University Press:  21 February 2011

Aaron Wold  and
Kirby Dwight
Aaron Wold
Affiliation:
Department of Chemistry, Brown University Providence, Rhode Island 02912
Kirby Dwight
Affiliation:
Department of Chemistry, Brown University Providence, Rhode Island 02912
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Abstract

The structure-property relationships of several conducting transition metal oxides, as well as their preparative methods, are presented in this paper. The importance of preparing homogeneous phases with precisely known stoichiometry is emphasized. A comparison is also made of the various techniques used to prepare both polycrystalline and single crystal samples. For transition metal oxides, the metallic properties are discussed either in terms of metal-metal distances which are short enough to result in metallic behavior, or in terms of the formation of a П* conduction band resulting from covalent metal-oxygen interactions. Metallic behavior is observed when the conduction bands are populated with either electrons or holes. The concentration of these carriers can be affected by either cation or anion substitutions. The discussion in this presentation will be limited to the elements Re, Ti, V, Cr, Mo, and Cu.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 156: Symposium M – High Temperature Superconductors: Relationships Between Properties, Structure, and Solid State Chemistry , 1989 , 3
Copyright
Copyright © Materials Research Society 1989

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References

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