Structural and Magnetic Phase Transitions in Minerals |
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Page 11
... fraction of Ab in the plagioclase , T , is the critical tempera- ture of the II - PI phase transition , and x ; is the ith component of the spontane- ous strain of the P1 phase . The equivalent temperature dependence of the order ...
... fraction of Ab in the plagioclase , T , is the critical tempera- ture of the II - PI phase transition , and x ; is the ith component of the spontane- ous strain of the P1 phase . The equivalent temperature dependence of the order ...
Page 41
... fraction of cation n on site m , and w / is an effective pair energy ( incorporating coordination numbers ) for cations i and j on sites k and 1. Configurational entropy , Sc , is given by 13 23 SCREE X In X. = - If we expand Hmix for ...
... fraction of cation n on site m , and w / is an effective pair energy ( incorporating coordination numbers ) for cations i and j on sites k and 1. Configurational entropy , Sc , is given by 13 23 SCREE X In X. = - If we expand Hmix for ...
Page 41
... fraction of cation n on site m , and w / is an effective pair energy ( incorporating coordination numbers ) for cations i and j on sites k and 1. Configurational entropy , Sc , is given by 12 23 SCREE X In X. Sc = ΜΙ If we expand Hmix ...
... fraction of cation n on site m , and w / is an effective pair energy ( incorporating coordination numbers ) for cations i and j on sites k and 1. Configurational entropy , Sc , is given by 12 23 SCREE X In X. Sc = ΜΙ If we expand Hmix ...
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