Three kinds of framework structures of corner-sharing WO6 octahedra derived from peroxo-polytungstates as a precursor

Tetsuichi Kudo, Junko Oi, Akira Kishimoto, Masahiko Hiratani

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Peroxo-polytungstic acid, formed by the direct reaction of metallic tungsten with hydrogen peroxide, precipitated an amorphous salt with various cations. Sintering those precursor salts at relatively low temperatures yielded crystalline complex oxides with the framework structures. These frameworks were based on six-membered rings of corner-sharing WO6 octahedra in common, but three distinct types occurred depending on the cation's size and valency: the hexagonal-WO3 type for K and Rb, the pyrochlore type for larger cations such as Cs and Tl, and another hexagonal type (a 2-D version of the pyrochlore type) for divalent cations such as Ba and Pb.

Original languageEnglish
Pages (from-to)779-787
Number of pages9
JournalMaterials Research Bulletin
Volume26
Issue number8
DOIs
Publication statusPublished - Aug 1991
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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