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 21
... variation depends only on even powers of n . In a first approximation , one expects a variation proportional to m ?, possibly superimposed on a linear variation with temperature . Such variations have been found for 0 15 10 5 1 T 0 273 ...
... variation depends only on even powers of n . In a first approximation , one expects a variation proportional to m ?, possibly superimposed on a linear variation with temperature . Such variations have been found for 0 15 10 5 1 T 0 273 ...
Page 29
... variation of the thermal expansion is far stronger in the inc phase than in the B phase ; large variations are ... variation . Analogous nonlinear variation is found for the modulus of the wavevector qo , which decreases from 0.033a ...
... variation of the thermal expansion is far stronger in the inc phase than in the B phase ; large variations are ... variation . Analogous nonlinear variation is found for the modulus of the wavevector qo , which decreases from 0.033a ...
Page 31
... variation of birefringence in such cycles , measured with a rate of change of temperature of 10 mK / h . Parts A and C , with small slopes , are attributed to a variation in birefrina gence at a constant value of modulation wavevectors ...
... variation of birefringence in such cycles , measured with a rate of change of temperature of 10 mK / h . Parts A and C , with small slopes , are attributed to a variation in birefrina gence at a constant value of modulation wavevectors ...
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
a-ß transition anisotropy ANNNI model antiferromagnetic atoms axis Bachheimer Ballet behavior berlinite Bukowinski calculated canting cation distributions Chem chemical cluster Coey components composition coupling crystal field crystal structure crystallographic Davidson decreases density disordered Dolino Earth Planet electron equilibrium experimental Fe2+ and Fe3+ Fe2SiO4 feldspar ferromagnetic free energy Geophys Ghose grunerite high-spin ilvaite inc phase incommensurate phase interactions Jeanloz Landau theory lattice layers Lindsley long-range order low temperatures low-spin FeO lower mantle LS transition M2 sites magnetic order magnetic properties magnetic structure Matsui measurements MgSiO3 MgSiOz perovskite 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 susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure