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 114
... orbitals . Under an octahedral crystal field , the six 3d orbitals are split into a set with t2g symmetry ( threefold degenerate ) and a set with eg symmetry ( twofold degenerate ) . The energy differ- ence between the t2g and eg orbitals ...
... orbitals . Under an octahedral crystal field , the six 3d orbitals are split into a set with t2g symmetry ( threefold degenerate ) and a set with eg symmetry ( twofold degenerate ) . The energy differ- ence between the t2g and eg orbitals ...
Page 119
... orbital energies . The atomic sphere radii and other parameters used in the SCF - Xa - SW molecular orbital calculations are given in Table 2 . The molecular orbital diagram for an ( FeO6 ) 1o- cluster with an Fe - O bond length of 2.16 ...
... orbital energies . The atomic sphere radii and other parameters used in the SCF - Xa - SW molecular orbital calculations are given in Table 2 . The molecular orbital diagram for an ( FeO6 ) 1o- cluster with an Fe - O bond length of 2.16 ...
Page 162
... orbital quantum number L in solids most of the orbital angular momentum is quenched . The magnetic moment is close to the spin - only value of 4μg , and the Landé g - factor is only slightly differ- ent from 2 , but it may be ...
... orbital quantum number L in solids most of the orbital angular momentum is quenched . The magnetic moment is close to the spin - only value of 4μg , and the Landé g - factor is only slightly differ- ent from 2 , but it may be ...
Contents
Preface | 1 |
Incommensurate Phase Transitions in Quartz and Berlinite | 17 |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
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 |
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 Co₂SiO4 Coey components composition coupling crystal field crystal structure crystallographic decreases density disordered Dolino Earth Planet electron entropy equilibrium experimental Fe² Fe2+ Fe2SiO4 Fe³ feldspar ferromagnetic free energy Fuess Geophys Ghose grunerite high-spin ilvaite inc phase incommensurate phase interactions ions Jeanloz Landau theory lattice layers Lindsley long-range order low temperatures lower mantle LS transition M2 sites magnetic order Magnetic properties magnetic structure Matsui measurements MgSiO3 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 solid solutions space group spin glass ẞ phase susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure