Transformation of the crystal structure in the series of K1-x Cs x BSi2O6 borosilicate solid solutions

E. S. Derkacheva, M. G. Krzhizhanovskaya, R. S. Bubnova, S. K. Filatov

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6 Scopus citations

Abstract

The transformation of the crystal structure by isomorphous K +-Cs+ substitutions in the non-tetrahedral positions leading to the phase transition has been studied in the series of K 1-x Cs x BSi2O6 solid solutions. The samples have been crystallized from the glass at 850°C for 10 h. According to the data on the crystal structures refined by the Rietveld method, the compositions with 0 ≤ x ≤ 0.35 crystallize in space group -Rfis1-temp̄43d, structural type KBSi2O6, and those with 0.37 ≤ x ≤ 1.0, crystallize in Ī3d, structural type CsBSi 2O6. The reversible cubic-cubic phase transition Ī43d Ī3d occurs in the composition range x = 0.35-0.37.

Original languageRussian
Pages (from-to)572-578
Number of pages7
JournalGlass Physics and Chemistry
Volume37
Issue number5
DOIs
StatePublished - Oct 2011

Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

Keywords

  • borosilicates
  • crystal structure
  • phase transition
  • Rietveld method
  • solid solutions

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