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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Results 1-5 of 82
Page vi
... structure , compressibility , and thermal expansion for the high pressure MgSiO , perovskite phase , which is considered to be the most abundant mineral in the earth's lower mantle . Their calculations suggest that MgSiO3 perovskite ...
... structure , compressibility , and thermal expansion for the high pressure MgSiO , perovskite phase , which is considered to be the most abundant mineral in the earth's lower mantle . Their calculations suggest that MgSiO3 perovskite ...
Page 1
... structures may then be discussed in terms of distorted modifications of this ideal monoclinic paraphase . The question that immediately arises is which structural distortions are compat- ible with the feldspar structure ? Group theory ...
... structures may then be discussed in terms of distorted modifications of this ideal monoclinic paraphase . The question that immediately arises is which structural distortions are compat- ible with the feldspar structure ? Group theory ...
Page 2
... structure was already distorted before to II . The general sequence of structural phase transitions in feldspar must always follow the same pattern : C2 / m C1 Il P1 - if no modulated phase occurs . The modulated phase can , in ...
... structure was already distorted before to II . The general sequence of structural phase transitions in feldspar must always follow the same pattern : C2 / m C1 Il P1 - if no modulated phase occurs . The modulated phase can , in ...
Page 3
... structural properties . It can be shown , however , that some structural aspects reflect the variation of the order ... structure . Both transitions would result in the same symmetry change but the critical temperature of the displacive ...
... structural properties . It can be shown , however , that some structural aspects reflect the variation of the order ... structure . Both transitions would result in the same symmetry change but the critical temperature of the displacive ...
Page 5
... structural phase transition is essentially identified as the condensation of a soft mode at the boundary of the first Brillouin zone of the II structure . In an extension of this model , clustering and ordering of alkali positions in ...
... structural phase transition is essentially identified as the condensation of a soft mode at the boundary of the first Brillouin zone of the II structure . In an extension of this model , clustering and ordering of alkali positions in ...
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