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 11
Its symmetry change is according to our basic assumption of a monoclinic
paraphase C2lm - Cl – 11. ... The displacive order parameter is related to the
symmetry reduction 11 514.5 K. The underlying model for the displacive
transition is ...
Its symmetry change is according to our basic assumption of a monoclinic
paraphase C2lm - Cl – 11. ... The displacive order parameter is related to the
symmetry reduction 11 514.5 K. The underlying model for the displacive
transition is ...
Page 19
Landau theory can describe both first- and second - order symmetry - breaking
transitions , but fluctuation effects are outside its range of validity . For a transition
that conserves the number of atoms in the unit cell , the order parameter is ...
Landau theory can describe both first- and second - order symmetry - breaking
transitions , but fluctuation effects are outside its range of validity . For a transition
that conserves the number of atoms in the unit cell , the order parameter is ...
Page 143
The symmetry of the high - temperature phase is orthorhombic , space group
Pnam , where the Fe2 + and Fe3 + ions occur in 8 ( d ) positions ( A sites ) .
Below the crystallographic phase transition at around 343 K ( Ghose et al . ,
1984a ...
The symmetry of the high - temperature phase is orthorhombic , space group
Pnam , where the Fe2 + and Fe3 + ions occur in 8 ( d ) positions ( A sites ) .
Below the crystallographic phase transition at around 343 K ( Ghose et al . ,
1984a ...
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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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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
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 lower mantle magnetic magnetic order magnetic structure 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