Structural and Magnetic Phase Transitions in MineralsS. Ghose, J.M.D. Coey, E. Salje This volume in Advances in Physical Geochemistry presents the latest synthesis of theory and experimental data pertaining to structural and magnetic phase transitions in a variety of geochemically important minerals. The book is the first to cover the impact of this rapidly progressing area of solid state physics in earth sciences and reflects its growing significance for mineralogy and petrology. |
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Page 66
... respectively , were calculated by counting the vertical A = B interlayer pairs and horizontal A - B intralayer pairs ( subject to periodic boundary conditions ) and then assigning energies Eier = E ( A = B ) = E ( B = A ) = & and ...
... respectively , were calculated by counting the vertical A = B interlayer pairs and horizontal A - B intralayer pairs ( subject to periodic boundary conditions ) and then assigning energies Eier = E ( A = B ) = E ( B = A ) = & and ...
Page 69
... respectively , and ( M1 ) - [ M2 ) pairs have minimum energy in configurations ( Mg ) - [ Ca ] and ( Al ) — [ Na ] . Now consider a cluster of three nn sites ( Figs . 7a - 7c ) : - ( M1 ) = ( M1 ) . [ M2 ] ( Mg ) = ( AI ) \ / [ Ca ] ...
... respectively , and ( M1 ) - [ M2 ) pairs have minimum energy in configurations ( Mg ) - [ Ca ] and ( Al ) — [ Na ] . Now consider a cluster of three nn sites ( Figs . 7a - 7c ) : - ( M1 ) = ( M1 ) . [ M2 ] ( Mg ) = ( AI ) \ / [ Ca ] ...
Page 195
... respectively . A map showing the difference Fourier transform between the observed magnetic structure factors and those given by the first model is not possible , because the small number of observed reflections results in parasitic ...
... respectively . A map showing the difference Fourier transform between the observed magnetic structure factors and those given by the first model is not possible , because the small number of observed reflections results in parasitic ...
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 |
Common terms and phrases
a-ß transition anisotropy ANNNI model antiferromagnetic atoms axis Bachheimer Ballet behavior berlinite Bukowinski calculated canting cation distributions Chem chemical cluster Coey components composition coupling crystal field crystal structure crystallographic Davidson decreases density disordered Dolino Earth Planet electron equilibrium experimental Fe2+ and Fe3+ Fe2SiO4 feldspar ferromagnetic free energy Geophys Ghose grunerite high-spin ilvaite inc phase incommensurate phase interactions Jeanloz Landau theory lattice layers Lindsley long-range order low temperatures low-spin FeO lower mantle LS transition M2 sites magnetic order magnetic properties magnetic structure Matsui measurements MgSiO3 MgSiOz perovskite Mineral Mn2SiO4 Mössbauer neutron diffraction observed octahedral olivines orbital order parameter orthopyroxene orthorhombic oxides pairs perovskite phase diagrams phase transition Phys polytypes polytypic phases predicted pyroxenes quartz Salje sample shown in Fig silicates SiO2 SiO4 solid solutions space group spin glass susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure