Structural and Magnetic Phase Transitions in Minerals |
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Page 101
... zero pressure density is too low . However , as demon- strated by Fig . 9 and Table 3 , the recently measured room temperature equation of state of MgSiO3 perovskite ( Knittle and Jeanloz , 1987 ) proved the previously com- puted ...
... zero pressure density is too low . However , as demon- strated by Fig . 9 and Table 3 , the recently measured room temperature equation of state of MgSiO3 perovskite ( Knittle and Jeanloz , 1987 ) proved the previously com- puted ...
Page 103
... zero pressure and 300 K Si - O , Å 9 , deg 0 , deg Ko , GPa Ko 0D K Measured 1.79 ( 3 ) b 11.7 ( 5 ) b 14.4 ( 5 ) b 266 ( 6 ) 3.9 ( 0.4 ) Computeda 1.904 7.03 10.41 260.0 4.01 1204 a Calculations done with regular Si - 06 octahedra ...
... zero pressure and 300 K Si - O , Å 9 , deg 0 , deg Ko , GPa Ko 0D K Measured 1.79 ( 3 ) b 11.7 ( 5 ) b 14.4 ( 5 ) b 266 ( 6 ) 3.9 ( 0.4 ) Computeda 1.904 7.03 10.41 260.0 4.01 1204 a Calculations done with regular Si - 06 octahedra ...
Page 106
... zero pressure mantle parameters are likely to be biased . 3. The thermal expansivity of silicate perovskite at zero pressure cannot be meas- ured at temperatures exceeding 850 K ( Knittle et al . , 1986 ) . Hence , an approxi- mately ...
... zero pressure mantle parameters are likely to be biased . 3. The thermal expansivity of silicate perovskite at zero pressure cannot be meas- ured at temperatures exceeding 850 K ( Knittle et al . , 1986 ) . Hence , an approxi- mately ...
Contents
Incommensurate Phase Transitions in Quartz and Berlinite | 17 |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
Multicritical Phase Relations in Minerals | 60 |
Copyright | |
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Structural and Magnetic Phase Transitions in Minerals S. Ghose,J.M.D. Coey,E. Salje Limited preview - 2012 |
Structural and Magnetic Phase Transitions in Minerals S. Ghose,J.M.D. Coey,E. Salje Snippet view - 1988 |
Structural and Magnetic Phase Transitions in Minerals S. Ghose,J.M.D. Coey,E. Salje Snippet view - 1988 |
Common terms and phrases
a-ẞ transition anisotropy ANNNI model antiferromagnetic approximation atoms axis Bachheimer Ballet behavior berlinite Bukowinski calculated canting Chem chemical Co₂SiO4 Coey components composition coupling crystal field crystal structure crystallographic Davidson decreases density Di-En disordered Dolino Earth Planet electron equilibrium experimental Fe² Fe2+ Fe2SiO4 Fe³ feldspar ferromagnetic free energy Geophys Ghose grunerite high pressure high-spin ilvaite inc phase incommensurate phase interactions ions Jeanloz Landau theory lattice layers Lindsley low temperatures lower mantle LS transition M2 sites magnetic order magnetic phase transitions magnetic properties magnetic structure Matsui measurements MgSiO3 Mineral Mn2SiO4 mode Mössbauer neutron diffraction observed octahedral olivines order parameter orthopyroxene orthorhombic pairs perovskite phase diagrams phase transition Phys polytypes polytypic phases predicted pyroxenes quartz Salje sample shown in Fig silicates SiO2 solid solution space group spin glass ẞ phase susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure