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 1
... space group C2 / m , as a common high - temperature form for all feldspars . This phase is , of course , hypothetical for those feldspars where melting occurs below the triclinic - mono- clinic inversion temperature , as in anorthite ...
... space group C2 / m , as a common high - temperature form for all feldspars . This phase is , of course , hypothetical for those feldspars where melting occurs below the triclinic - mono- clinic inversion temperature , as in anorthite ...
Page 2
... space group of the distorted phase is CI . 2. The transformation changes the translational symmetry . This can be ... space groups PI and II , where the phase PI can occur only if the structure was already distorted before to II . The ...
... space group of the distorted phase is CI . 2. The transformation changes the translational symmetry . This can be ... space groups PI and II , where the phase PI can occur only if the structure was already distorted before to II . The ...
Page 3
... space group C2 / m . On cooling , the symmetry can be reduced to triclinic ( C1 ) both by a displacive transition and by an order / disorder transition that involves the distribution of Al and Si atoms between tetrahedral sites of the ...
... space group C2 / m . On cooling , the symmetry can be reduced to triclinic ( C1 ) both by a displacive transition and by an order / disorder transition that involves the distribution of Al and Si atoms between tetrahedral sites of the ...
Page 20
... space group is P6222 or P6422 . On cooling , the atoms shift to less symmetric positions : ( u , 0,0 ) for silicon and ( x , y , z ) for oxygen ( Table 1 ) . The space groups of the a phase are P3,21 and P3221 and the symmetry is lower ...
... space group is P6222 or P6422 . On cooling , the atoms shift to less symmetric positions : ( u , 0,0 ) for silicon and ( x , y , z ) for oxygen ( Table 1 ) . The space groups of the a phase are P3,21 and P3221 and the symmetry is lower ...
Page 41
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Contents
1 | |
17 | |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
Multicritical Phase Relations in Minerals | 60 |
Equation of State and Possible Critical Phase Transitions | 91 |
HighSpin to LowSpin Transition of IronII Oxides | 113 |
Molecular Dynamics Studies of Polymorphism of SiO2 | 129 |
Charge Localization and Associated Crystallographic and Magnetic | 141 |
Magnetic Phase Transitions in Silicate Minerals | 162 |
Magnetic Phase Transition in Olivines M2SiO4 | 185 |
Index 241 | 240 |
Other editions - View all
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 cation distributions Chem chemical cluster Coey components composition coupling crystal field crystal structure crystallographic cubic decreases density disordered Dolino Earth Planet electron equilibrium experimental Fe² Fe2+ Fe2SiO4 Fe³ Fe3+ feldspar ferromagnetic free energy 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 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 ẞ phase susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure