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Optical emission of MgSiO3 glass, enstatite, olivine, and quartz under shock wave compression was investigated with optical pyrometry at discrete wavelengths ranging from visible to near infrared. W...
Six single crystals of Mg (Mg Si Al )Si O with x = 0.05, 0.13, 0.24, 0.38, 0.52, and 0.64 (the 3 x x 2(R)Cx 3 12 majorite solid-solution) were synthesized at 20 GPa and 2000 ?C with a °∞6-8°± type ...
Elasticity of MgSiO3 orthoenstatite     MgSiO3 orthoenstatite  modulus       font style='font-size:12px;'> 2012/3/31
The single-crystal elastic moduli of the MgSiO orthoenstatite end-member have been measured by Brillouin spectroscopy at ambient conditions. The aggregate elastic moduli at 1 atm are K 107.6(15) GP...
ThephasediagramforMgSiO wasestimatedusingtheentropy,enthalpy,thermalex-3 pansivity,andvolumesofallthephases.Entropyatthevarious P-T conditionsinthephase diagramwasestimatedusingstatisticalthermodyna...
WestudiedMgSiO withtheperovskitestructureheatedtotemperaturesupto1500K3 atpressuresbetween36and110GPawithin-situX-raydiffraction.Thenewpressure- volume-temperature(P-V-T)datawerecombinedwithliteratu...
ThisstudypresentsevidencethatforasolidsolutionofMgFe SiO perovskite,the x x-1 3 shiftinvolumethermalexpansivity,,issmallastheindex x ischanged.Accordingto dataobtainedtheoreticallybyHamaandSuito(19...
Cation sites in Al-rich MgSiO3 perovskites     Cation sites  Al-rich MgSiO3 perovskites       font style='font-size:12px;'> 2012/4/1
Local structure analysis of Al-containing magnesium silicate perovskite has been carried out with X-ray absorption spectra recorded at the Mg, Al, and Si K -edges using the SA32 beam-line of SuperAco ...
The high pressure phase transitions and melting of the mantle mineral MgSiO3 with the perovskite structure were investigated using molecular dynamics (MD) simulations of a large system of atoms on a p...
A polycrystalline sample of MgSiO3-orthopyroxene was hot pressed at a pressure of 4 GPa and temperature of 975 8 C in a multi-anvil apparatus. The recovered specimen has a bulk density within 1% of th...
Thermoelastic properties of MgSiO3 perovskite as the Debye approach     Thermoelastic  properties  MgSiO3  perovskite       font style='font-size:12px;'> 2012/3/30
MgSiO 3 perovskite is shown to be a Debye-like mineral by the determination of specific heat, CV, entropy, S, and thermal pressure, D P Th, using the Debye theory up to 1800 K.Sound velocities and bul...
Unit-cellparametersofsynthetic(Mg,Fe)SiO ortho-andclinopyroxenesweredeter-minedatregularintervalsinthetemperaturerange293¤C1094KusingpowderX-ra diffractiontechniques.Volumethermalexpansioncoef?cients...
ThefullelasticconstanttensoroforthorhombicMgSiO perovskitehasbeendetermined from?rstprinciplesforthe?rsttimeathighpressureusingtheplane-wavepseudopotential method.Theathermalelasticmoduli,determined...
High-pressure and high-temperature Raman spectra ofilmenite-type MgSi03have been collected up to 7 GPa and 1030 K,respectively. The observed Raman frequency shifts withpressure and temperature wereuse...
Raman spectra oftwo synthetic, noncubic garnet samples rich in MgSi03component weremeasuredin adiamond-anvil cellto 200kbar atroom temperature. Sample1was pure MgSi03majorite;sample 2wasa solid soluti...
High-pressure X-ray powder diffraction data for MgSi03ilmenite have been collected up to 28 GPa using a diamond-anvil cell in an energy-dispersive configuration at the storage ring DCI at the LURE (Or...

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