Crystal structures and thermal expansion of Sr1–xBaxBi2B2O7 solid solutions

R. S. Bubnova, A. P. Shablinskii, S. N. Volkov, S. K. Filatov, M. G. Krzhizhanovskaya, V. L. Ugolkov

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A series of Sr1–xBaxBi2B2O7 solid solutions (x = 0–1) have been synthesized by crystallization from glass ceramics. The crystal structures of solid solutions at x = 0.65 and x = 1 were solved by direct methods of X-ray diffraction from single crystal data and refined in a reduced cell ((aBa = aSr/√3)) relative to SrBi2B2O7 in the same space group P63. Using the Rietveld method, the phase transition range at x = 0.65–0.70 with a reduction of the unit cell has been revealed. As was shown by method of high-temperature powder X-ray diffraction, the solid solutions demonstrated an anisotropic thermal expansion (TE) upon heating in air.

Original languageEnglish
Pages (from-to)337-348
Number of pages12
JournalGlass Physics and Chemistry
Volume42
Issue number4
DOIs
StatePublished - 10 Aug 2016

Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

Keywords

  • bismuth borates
  • crystal structure
  • immiscibility range
  • thermal expansion

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