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Mixed rutile crystal formation in the Ti-Ni-Sb-O system Part II. Mechanism of rutile solid solution

Authors
Journal
Materials Research Bulletin
0025-5408
Publisher
Elsevier
Publication Date
Volume
3
Issue
3
Identifiers
DOI: 10.1016/0025-5408(68)90125-6
Disciplines
  • Physics

Abstract

Abstract The mechanism of mixed rutile crystal formation for samples with various proportions of titanium, nickel and antimony was studied by X-ray diffraction methods and by the use of the optical and infrared spectra. Solid state reaction in air results in a partial oxidation of Sb III to Sb V and in rutile solid solutions with both antimony and nickel in regular metal positions. If the calcination takes place in an oxygen-free atmosphere, only small amounts of nickel and antimony can go into solid solution and this by a defect mechanism. The overall electrical neutrality in mixed rutile crystals is achieved by the variation of the Sb III:Sb V ratio depending on the amount of Ni II.

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