Thermoelastic properties and crystal structure of MgSiO3 perovskite at lower mantle pressure and temperature conditions

By G. Fiquet, A. Dewaele, D. Andrault, M. Kunz, T. Bihan. 2000

275 citations recorded by the source corpus.

Subfields: Electronic, Optical and Magnetic Materials, Geophysics

View Paper: https://www.semanticscholar.org/paper/bd39e6f960dc9072b585775b382482e53bcb7ef5

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In Electronic, Optical and Magnetic Materials

1. Artem R. Oganov
2. Shigeaki Ono
3. K. Hirose
4. T. Ahrens
5. D. Rubie
6. D. Frost
7. P. Asimow
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In Geophysics

1. Artem R. Oganov
2. K. Hirose
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5. V. Prakapenka
6. D. Rubie
7. D. Frost
8. J. Mosenfelder

Citations in the corpus

• Phase transition in MgSiO 3 perovskite in the earth's lower mantle (2004, background): “Reports of its dissociation into SiO2 and MgO at 70–80 GPa and 3000 K [3,4], or of a possibly subtle phase change above 83 GPa and 1700 K [5], or of no phase transition at all [6] up to 94 GPa and 2500 K, have appeared in the literature.”
• In situ observations of phase transition between perovskite and CaIrO3-type phase in MgSiO3 and pyrolitic mantle composition (2005, result): “The bulk modulus, K0, of the NaCl-type phase at 0 GPa was about 300 GPa [31], which is much higher than that of MgSiO3 perovskite (~260 GPa) reported in previous studies [e.g., [ 19 ,45]].”
• Spin state of ferric iron in MgSiO3 perovskite and its effect on elastic properties (2010, unknown): “7) which was calculated based on the thermal parameters for Mg-endmember Pv (Fiquet et al., 2000; Shim and Duffy, 2000).”
• Solidus and liquidus profiles of chondritic mantle: Implication for melting of the Earth across its history (2011, background): “According to the thermo-elastic parameters of the main Mg–Pv component (Fiquet et al., 2000), the value of ΔP is ~2.”
• Lower mantle composition and temperature from mineral physics and thermodynamic modelling (2005, methodology): “We notice that the inverted value of -0.021 GPa K−1 for (∂K 0,T /∂T )P is in agreement with several other studies (Wang et al. 1994; Utsumi et al. 1995; Funamori et al. 1996; Fiquet et al. 1998, 2000; Gillet et al. 2000).”
• Melting and mixing states of the Earth’s mantle after the Moon-forming impact (2015, unknown): “tain but may be reasonable because this is close to a rough estimate of the density at such a high temperature. The density at the outer edge can be approximated as ˆ˘ˆ 0(1 5T) ˘1577kg/m3 at = 2:710 (Fiquet et al., 2000), ˆ 0 = 2650kg/m3, and T = 1:5 104K. After this procedure, PE in the two EOS bec”
• A synchrotron Mössbauer spectroscopy study of (Mg,Fe)SiO3 perovskite up to 120 GPa (2005, background): “The increased distortion is similarly observed from high-pressure X-ray diffraction data on the Si-O-Si tilt-angles in MgSiO3 perovskite (Fiquet et al. 2000).”
• Raman spectroscopy of Fe2O3 to 62 GPa (2002, background): “However, it has since been shown that the perovskite structure is stable for that pressure range (Liu 1975; Fiquet et al. 2000; Shim et al. 2001).”
• Equation of state of gold and its application to the phase boundaries near 660 km depth in Earth’s mantle (2002, background): “Recent developments in multi-anvil press [1] and laser-heated diamond anvil cell [2,3] techniques together with synchrotron X-ray di¡raction enable in situ determination of phase diagrams [1,4^9] and the equations of state of Earth materials [10,11] at deep interior conditions.”
• Ab initio elasticity and thermal equation of state of MgSiO3 perovskite (2001, background): “Experiments at 298 K: small circles [16], large solid circles [1], diamonds [2].”
• Intermediate-spin ferrous iron in lower mantle perovskite (2007, background): “S5 ), compared with only 20p for the MgSiO 3 perovskite endmembe”
• The MgSiO3 system at high pressure: Thermodynamic properties of perovskite, postperovskite, and melt from global inversion of shock and static compression data (2009, background): “…bulk modulus (K0S = 253(3) GPa) [Sinogeikin et al., 2004; Li and Zhang, 2005; Vanpeteghem et al., 2006], and the value of its pressure derivative (K0S 0 ) is still in dispute due to severe disagreement between the two highest-pressure static P-V-T studies [Saxena et al., 1999; Fiquet et al., 2000].”