Structural and Magnetic Phase Transitions in Minerals |
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Page 114
... orbitals . Under an octahedral crystal field , the six 3d orbitals are split into a set with 12g symmetry ( threefold degenerate ) and a set with e , 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 12g symmetry ( threefold degenerate ) and a set with e , 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 ) 10- 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 ) 10- cluster with an Fe - O bond length of 2.16 ...
Page 162
... orbital quantum number L = 2 , but 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 = 2 , but 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
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