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 24
Although some variation may be expected in different samples , or may be
attributed to thermal hysteresis effects or to the influence of size in fine powders ,
the most plausible explanation for this large spread is experimental inaccuracy .
Although some variation may be expected in different samples , or may be
attributed to thermal hysteresis effects or to the influence of size in fine powders ,
the most plausible explanation for this large spread is experimental inaccuracy .
Page 213
Figure 7 shows the halfwidth at half maximum ( HWHM ) of the magnetic ( 111 )
peak of a sample with x = 0.51 . ... 900 Å . Within these limits no broadening was
observed for type I samples , while for type II samples the cluster size is roughly ...
Figure 7 shows the halfwidth at half maximum ( HWHM ) of the magnetic ( 111 )
peak of a sample with x = 0.51 . ... 900 Å . Within these limits no broadening was
observed for type I samples , while for type II samples the cluster size is roughly ...
Page 219
The sample of pure 2H polytype was heated rapidly to 340 K and a diffraction
pattern was taken every 12 h . After 5 days , the temperature was increased by 5
K under renewed X - ray diffraction . This procedure was continued until the
crystal ...
The sample of pure 2H polytype was heated rapidly to 340 K and a diffraction
pattern was taken every 12 h . After 5 days , the temperature was increased by 5
K under renewed X - ray diffraction . This procedure was continued until the
crystal ...
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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