Structural and Magnetic Phase Transitions in Minerals |
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Page 79
... stable phase when- ever y does not . Note that in Burton ( 1987 ) the stability of 8 was underestimated as being -4 per tetrahedron , whereas the correct value is -1 per tetrahedron . Quantitative Comparison with Experiment Geologically ...
... stable phase when- ever y does not . Note that in Burton ( 1987 ) the stability of 8 was underestimated as being -4 per tetrahedron , whereas the correct value is -1 per tetrahedron . Quantitative Comparison with Experiment Geologically ...
Page 233
... stability of other polytypic phases , even if their stability points are degenerate or possess similar ground state energies in a description such as the ANNNI model , which will be discussed later . First , a phase is considered which ...
... stability of other polytypic phases , even if their stability points are degenerate or possess similar ground state energies in a description such as the ANNNI model , which will be discussed later . First , a phase is considered which ...
Page 234
... stability field between those of the basic polytypes . The physical nature of SU can vary for different polytypic materials , as does the nonideality of mixing for most crystals . Following this idea , the physical origin of the stability ...
... stability field between those of the basic polytypes . The physical nature of SU can vary for different polytypic materials , as does the nonideality of mixing for most crystals . Following this idea , the physical origin of the stability ...
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