Structural and Magnetic Phase Transitions in MineralsThis 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 93
BO , octahedra occupy the corners of a cube with an A2 + cation at its center . The orthorhombic structure results on coordinated rotations of the octahedra around the two axes . The Theoretical Model Our objective is to construct a ...
BO , octahedra occupy the corners of a cube with an A2 + cation at its center . The orthorhombic structure results on coordinated rotations of the octahedra around the two axes . The Theoretical Model Our objective is to construct a ...
Page 96
Some of the compression of the lattice is then taken up by distortion of the SiO octahedra . ... of the bond lengths is small , the net effect is to practically eliminate the pressure - induced increase in the octahedral rotations .
Some of the compression of the lattice is then taken up by distortion of the SiO octahedra . ... of the bond lengths is small , the net effect is to practically eliminate the pressure - induced increase in the octahedral rotations .
Page 118
Internal energya estimated for HS LS transition of octahedral Fe2 + R ( Fe - 0 ) 1.85 10D , AU 2.16 2.05 1.95 Estimates from ligand field theoryb 11,000 14,300 18,300 10,950 4,346 -3,654 Estimates from SCF - Xa - SW MO calculations ...
Internal energya estimated for HS LS transition of octahedral Fe2 + R ( Fe - 0 ) 1.85 10D , AU 2.16 2.05 1.95 Estimates from ligand field theoryb 11,000 14,300 18,300 10,950 4,346 -3,654 Estimates from SCF - Xa - SW MO calculations ...
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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 |
Common terms and phrases
antiferromagnetic appears applied approximation atoms axis Ballet behavior bond calculated cation Chem chemical cluster Coey components composition constant corresponding coupling critical crystal decreases density dependence described determined diffraction direction disordered Dolino effect electron energy equilibrium estimated et al exchange experimental experiments Fe2+ Fe3+ ferromagnetic field function Ghose give given heat ilvaite inc phase increases indicate interactions ions iron lattice layers Lindsley lower mantle magnetic magnetic order materials measurements Mineral mode Mössbauer natural neutron observed obtained occur octahedral olivines order parameter pairs perovskite phase diagrams phase transition Phys physical pigeonite polytypes positions possible potential predicted pressure properties pyroxenes quartz range respectively Salje sample shown shows silicates solid solution space group spin stability structure symmetry Table temperature theory thermodynamic tion transformation unit variation