Physics and Chemistry of Minerals

, Volume 22, Issue 1, pp 61–65

On the thermal expansion of β-cristobalite

Authors

  • I. P. Swainson
    • Department of Earth SciencesUniversity of Cambridge
    • Neutron and Condensed Matter Science, Chalk River Laboratories, AECL Research
  • M. T. Dove
    • Department of Earth SciencesUniversity of Cambridge
    • Neutron and Condensed Matter Science, Chalk River Laboratories, AECL Research
Article

DOI: 10.1007/BF00202681

Cite this article as:
Swainson, I.P. & Dove, M.T. Phys Chem Minerals (1995) 22: 61. doi:10.1007/BF00202681

Abstract

We have measured the temperature dependence of the cell parameter of cubic β-cristobalite up to 1300° C by high-precision X-ray powder diffraction. The thermal expansion coefficient decreases on heating, until above 1000° C the cell parameter is virtually constant in value. We discuss this change in the thermal expansion with reference to the behaviour of low-frequency rigid unit modes and fluctuations associated with the α-β phase transition.

Copyright information

© Springer-Verlag 1995