Supercell ordering in a hollandite-type phase: Potassium magnesium antimony oxide

A. Pring, David Smith, D. A. Jefferson

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The hollandite-type phase K1.33Mg3.11Sb4.89O16 has been studied by X-ray and electron diffraction as well as high resolution electron microscopy at 500 kV. This material was found to adopt the tetragonal hollandite structure, space group I4 m, with a = 10.315 (4)Å; c = 3.080 (4) Å. The formation of a 3c body-centered supercell was observed and this was shown to be due to ordering of potassium cations within the tunnel sites. Computer image simulations established that ordering of the tunnel cations alone rather than the octahedrally coordinated framework cations was responsible for superlattice formation. In some crystals the supercell ordering appeared to occur in domains.

Original languageEnglish (US)
Pages (from-to)373-381
Number of pages9
JournalJournal of Solid State Chemistry
Volume46
Issue number3
DOIs
StatePublished - Mar 1 1983
Externally publishedYes

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Antimony
antimony
Magnesium
Potassium
Cations
magnesium
potassium
Positive ions
cations
Oxides
oxides
tunnels
Tunnels
High resolution electron microscopy
Electron diffraction
electron microscopy
electron diffraction
X ray diffraction
Crystals
high resolution

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Supercell ordering in a hollandite-type phase : Potassium magnesium antimony oxide. / Pring, A.; Smith, David; Jefferson, D. A.

In: Journal of Solid State Chemistry, Vol. 46, No. 3, 01.03.1983, p. 373-381.

Research output: Contribution to journalArticle

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