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 19
In some cases , the high - temperature phase is not a perfectly periodic structure
but some atoms can be distributed randomly between symmetry - related
positions . At the atomic scale the structure is disordered , but because of the
random ...
In some cases , the high - temperature phase is not a perfectly periodic structure
but some atoms can be distributed randomly between symmetry - related
positions . At the atomic scale the structure is disordered , but because of the
random ...
Page 20
Atomic position of silicon ( u , 0 , 0 ) and of oxygen ( x , y , z ) in the B phase at
863 K and in the a phase at room ... only one free parameter is needed to define
the atomic positions : a silicon atom is at ( 12,0,0 ) and an oxygen atom is at ( x , x
...
Atomic position of silicon ( u , 0 , 0 ) and of oxygen ( x , y , z ) in the B phase at
863 K and in the a phase at room ... only one free parameter is needed to define
the atomic positions : a silicon atom is at ( 12,0,0 ) and an oxygen atom is at ( x , x
...
Page 230
Their positions in reciprocal space are not identical to those of the pure 12R
material . With increasing degree of transformation , the reflections sharpen and
move to their final positions . These observations are affected by early stages of ...
Their positions in reciprocal space are not identical to those of the pure 12R
material . With increasing degree of transformation , the reflections sharpen and
move to their final positions . These observations are affected by early stages of ...
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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