Thermal expansion of modified spinel, beta -Mg2SiO4.

I. Suzuki, E. Ohtani, M. Kumazawa

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Abstract

Thermal expansion of modified orthorhombic beta -Mg2SiO4 was measured by XRD in the T range 20o-800oC. Gruneisen's theory of thermal expansion was applied to the data, yielding thermal expansion coefficients alpha a 9.14, alpha b 5.46, alpha c 5.92 and alpha v 20.6 X 10-6/K at 293 K. The magnitude of the volume expansion coefficient of beta -Mg2SiO4 is located between those of gamma - and alpha - phases. beta -Mg2SiO4 is found to be a significantly anisotropic material both in thermal expansion and elasticity.-T.R.

Original languageEnglish
Pages (from-to)273-280
Number of pages8
JournalJournal of Physics of the Earth
Volume28
Issue number3
Publication statusPublished - 1980
Externally publishedYes

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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    Suzuki, I., Ohtani, E., & Kumazawa, M. (1980). Thermal expansion of modified spinel, beta -Mg2SiO4. Journal of Physics of the Earth, 28(3), 273-280.