Structural and Magnetic Phase Transitions in Minerals |
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Page 116
... distance is decreased to 1.93 Å . From the temperature dependence of its magnetic susceptibility , the mineral deerite was initially thought to contain low - spin Fe2 + ( Carmichael et al . , 1966 ) . From the Mössbauer spectrum , it ...
... distance is decreased to 1.93 Å . From the temperature dependence of its magnetic susceptibility , the mineral deerite was initially thought to contain low - spin Fe2 + ( Carmichael et al . , 1966 ) . From the Mössbauer spectrum , it ...
Page 136
... distance is 1.813 Å ) . On the other hand , the O - O distances in the SiO , octahedron are not equal ; among 12 O - O edges , there are two sets of nonequivalent distances ( six edges with distance 2.345 Å and six with dis- tance 2.766 ...
... distance is 1.813 Å ) . On the other hand , the O - O distances in the SiO , octahedron are not equal ; among 12 O - O edges , there are two sets of nonequivalent distances ( six edges with distance 2.345 Å and six with dis- tance 2.766 ...
Page 138
... distance / Å Pa3 rutile 5 6 Fig . 5. The MD - calculated pair correlation functions for Si - O , O - O , and Si - Si pairs in Pa3 - silica and SiO2 - rutile at 0 GPa and 300 K ( MS - 1 potential ) . is the case at P > 100 GPa , a ...
... distance / Å Pa3 rutile 5 6 Fig . 5. The MD - calculated pair correlation functions for Si - O , O - O , and Si - Si pairs in Pa3 - silica and SiO2 - rutile at 0 GPa and 300 K ( MS - 1 potential ) . is the case at P > 100 GPa , a ...
Contents
Incommensurate Phase Transitions in Quartz and Berlinite | 17 |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
Multicritical Phase Relations in Minerals | 60 |
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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