Structural and Magnetic Phase Transitions in Minerals |
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Page 97
... critical transformations can be exhibited by the behavior of the distortion angles 0 and o as the temperature is ... critical temperatures is approximately the same whether the octahedra are allowed to distort or not . Although both ...
... critical transformations can be exhibited by the behavior of the distortion angles 0 and o as the temperature is ... critical temperatures is approximately the same whether the octahedra are allowed to distort or not . Although both ...
Page 99
... critical transformations are approached , it was not possible to calculate equilibrium angles beyond the tem ... critical temperature and ẞ is the critical exponent . Numerical estimates of the critical parameters are given in Table 1 ...
... critical transformations are approached , it was not possible to calculate equilibrium angles beyond the tem ... critical temperature and ẞ is the critical exponent . Numerical estimates of the critical parameters are given in Table 1 ...
Page 106
... critical phase boundaries for silicate perovskite superimposed on lower - mantle adiabats . Although it must be admitted that these critical transformations are somewhat hypothetical , evidence related to other perovskites makes them at ...
... critical phase boundaries for silicate perovskite superimposed on lower - mantle adiabats . Although it must be admitted that these critical transformations are somewhat hypothetical , evidence related to other perovskites makes them at ...
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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Other editions - View all
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