Transformations of the crystal structure in a series of rubidium boroleucite solid solutions from the x-ray powder diffraction data

M. G. Krzhizhanovskaya, R. S. Bubnova, S. K. Filatov, D. Meyer, P. Paufler

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The crystal structures of rubidium boroleucite RbBSi2O 6 [a = 12.785(1) Å] and two silicon-rich solid solutions Rb0.96(B0.77Si2.18)2.95O 6 [a = 12.858(1) Å] and Rb0.92(B 0.46Si2.42)2.88O6 [a = 12.914(1) Å] are refined in the space group I 4 3d (KBSi2O6 structural type) by the Rietveld method. Polycrystalline samples are prepared through the crystallization of glasses. The substitution Si4+ → B3+ in tetrahedra of the borosilicate framework occurs with the charge compensation due to a deficit of rubidium and boron. The formation of vacancies in tetrahedral positions leads to the breaking of bonds between tetrahedra, and bridging oxygen atoms become terminal atoms.

Original languageEnglish
Pages (from-to)599-607
Number of pages9
JournalGlass Physics and Chemistry
Volume29
Issue number6
DOIs
StatePublished - 1 Nov 2003

Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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