Thermal expansion Of γ Mg2SiO4

Isao Suzuki; Eiji Otani; Mineo Kumazawa

doi:10.4294/jpe1952.27.53

Thermal expansion Of γ Mg₂SiO₄

Isao Suzuki, Eiji Otani, Mineo Kumazawa

SCI - Earth Science

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

Thermal expansion of γ-Mg2SiO4 was measured with X-ray powder diffraction method up to 750°C at atmospheric pressure. The data are analyzed in terms of Grγneisen's theory of thermal expansion and Grγneisen's parameter is obtained to be 1.27. Volume thermal expansion coefficient is 19 at 20°C and 27 at 500°C in unit of 10-6/K. These values are compared with those of γ-Fe2SiO4, MgAl2O4 and other spinel type compounds, and it is suggested that the anharmonic properties of γ-(Mg, Fe)2SiO4 may be very close to those of MgAl2O4.

Original language	English
Pages (from-to)	53-61
Number of pages	9
Journal	journal of physics of the earth
Volume	27
Issue number	1
DOIs	https://doi.org/10.4294/jpe1952.27.53
Publication status	Published - 1979 Jan 1

ASJC Scopus subject areas

Earth and Planetary Sciences(all)

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abstract = "Thermal expansion of γ-Mg2SiO4 was measured with X-ray powder diffraction method up to 750°C at atmospheric pressure. The data are analyzed in terms of Grγneisen's theory of thermal expansion and Grγneisen's parameter is obtained to be 1.27. Volume thermal expansion coefficient is 19 at 20°C and 27 at 500°C in unit of 10-6/K. These values are compared with those of γ-Fe2SiO4, MgAl2O4 and other spinel type compounds, and it is suggested that the anharmonic properties of γ-(Mg, Fe)2SiO4 may be very close to those of MgAl2O4.",

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N2 - Thermal expansion of γ-Mg2SiO4 was measured with X-ray powder diffraction method up to 750°C at atmospheric pressure. The data are analyzed in terms of Grγneisen's theory of thermal expansion and Grγneisen's parameter is obtained to be 1.27. Volume thermal expansion coefficient is 19 at 20°C and 27 at 500°C in unit of 10-6/K. These values are compared with those of γ-Fe2SiO4, MgAl2O4 and other spinel type compounds, and it is suggested that the anharmonic properties of γ-(Mg, Fe)2SiO4 may be very close to those of MgAl2O4.

AB - Thermal expansion of γ-Mg2SiO4 was measured with X-ray powder diffraction method up to 750°C at atmospheric pressure. The data are analyzed in terms of Grγneisen's theory of thermal expansion and Grγneisen's parameter is obtained to be 1.27. Volume thermal expansion coefficient is 19 at 20°C and 27 at 500°C in unit of 10-6/K. These values are compared with those of γ-Fe2SiO4, MgAl2O4 and other spinel type compounds, and it is suggested that the anharmonic properties of γ-(Mg, Fe)2SiO4 may be very close to those of MgAl2O4.

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