Physics
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pepi...72...12l&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 72, Issue 1-2, p. 12-20.
Physics
1
Scientific paper
By combining both Raman and compression data obtained in the static high-pressure experiments, the zero-pressure isothermal bulk modulus (BT,0) and its first pressure derivative (B'T,0) for MgSiO3-perovskite at room temperature have been calculated without employing an empirical equation of state. If the adiabatic bulk modulus determined by Brillouin scattering is reliable, then the most acceptable value of BT,0 is 2.48 +/- 0.02 Mbar, which was evaluated without a presumptive knowledge of the value of B'0. Should the most intense Raman mode which varies linearly with pressure as determined by experiment be correct, all the compression studies conclude that B'T,0 = 1.8 +/- 0.2 for MgSiO3-perovskite. It is probably the first reliable determination of this parameter.
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