Thermoelastic properties of the high-pressure phase of SnO2 determined by in situ X-ray observations up to 30 GPa and 1400 K

S. Ono, E. Ito, T. Katsura, Akira Yoneda, M. J. Walter, Satoru Urakawa, W. Utsumi, K. Funakoshi

Research output: Contribution to journalArticle

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Abstract

In situ synchrotron X-ray experiments in the system SnO2 were made at pressures of 4-29 GPa and temperatures of 300-1400 K using sintered diamond anvils in a 6-8 type high-pressure apparatus. Orthorhombic phase (α-PbO2 structure) underwent a transition to a cubic phase (Pα3̄ structure) at 18 GPa. This transition was observed at significantly lower pressures in DAC experiments. We obtained the isothermal bulk modulus of cubic phase K0 = 252(28) GPa and its pressure derivative K′ = 3.5(2.2). The thermal expansion coefficient of cubic phase at 25 GPa up to 1300 K was determined from interpolation of the P-V-T data obtained, and is 1.7(± 0.7) × 10-5 K-1 at 25 GPa.

Original languageEnglish
Pages (from-to)618-622
Number of pages5
JournalPhysics and Chemistry of Minerals
Volume27
Issue number9
DOIs
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

X rays
bulk modulus
thermal expansion
Phase structure
diamond
interpolation
low pressure
experiment
Diamond
Synchrotrons
Thermal expansion
Diamonds
Interpolation
Elastic moduli
temperature
Experiments
Derivatives
in situ
Temperature

Keywords

  • High pressure
  • Phase transition
  • Tin dioxide

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Materials Science(all)

Cite this

Thermoelastic properties of the high-pressure phase of SnO2 determined by in situ X-ray observations up to 30 GPa and 1400 K. / Ono, S.; Ito, E.; Katsura, T.; Yoneda, Akira; Walter, M. J.; Urakawa, Satoru; Utsumi, W.; Funakoshi, K.

In: Physics and Chemistry of Minerals, Vol. 27, No. 9, 2000, p. 618-622.

Research output: Contribution to journalArticle

Ono, S. ; Ito, E. ; Katsura, T. ; Yoneda, Akira ; Walter, M. J. ; Urakawa, Satoru ; Utsumi, W. ; Funakoshi, K. / Thermoelastic properties of the high-pressure phase of SnO2 determined by in situ X-ray observations up to 30 GPa and 1400 K. In: Physics and Chemistry of Minerals. 2000 ; Vol. 27, No. 9. pp. 618-622.
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AU - Walter, M. J.

AU - Urakawa, Satoru

AU - Utsumi, W.

AU - Funakoshi, K.

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