Structural and Magnetic Phase Transitions in Minerals |
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Page 18
... inc phase , which can be considered as a small perturbation in the a - ẞ transition within the framework of Landau theory . Then we present the main properties of the inc phase : a description of the triangular modulated structure , tem ...
... inc phase , which can be considered as a small perturbation in the a - ẞ transition within the framework of Landau theory . Then we present the main properties of the inc phase : a description of the triangular modulated structure , tem ...
Page 26
... inc phases can generally be attributed to electronic interactions in which the wave vector of the Fermi surface , which has no relation to the lattice period , plays an essential part . For dielectric materials competing interactions ...
... inc phases can generally be attributed to electronic interactions in which the wave vector of the Fermi surface , which has no relation to the lattice period , plays an essential part . For dielectric materials competing interactions ...
Page 34
... inc phase stimulated research again on the a - ẞ quartz transition . This material offers unique possibilities for fundamen- tal studies of inc phases : 1. The triangular 3q structure leads to interesting new morphological features such ...
... inc phase stimulated research again on the a - ẞ quartz transition . This material offers unique possibilities for fundamen- tal studies of inc phases : 1. The triangular 3q structure leads to interesting new morphological features such ...
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 |
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 Chem chemical Co₂SiO4 Coey components composition coupling crystal field crystal structure crystallographic Davidson decreases density Di-En disordered Dolino Earth Planet electron equilibrium experimental Fe² Fe2+ Fe2SiO4 Fe³ feldspar ferromagnetic free energy Geophys Ghose grunerite high pressure high-spin ilvaite inc phase incommensurate phase interactions ions Jeanloz Landau theory lattice layers Lindsley low temperatures lower mantle LS transition M2 sites magnetic order magnetic phase transitions magnetic properties magnetic structure Matsui measurements MgSiO3 Mineral Mn2SiO4 mode Mössbauer neutron diffraction observed octahedral olivines order parameter orthopyroxene orthorhombic pairs perovskite phase diagrams phase transition Phys polytypes polytypic phases predicted pyroxenes quartz Salje sample shown in Fig silicates SiO2 solid solution space group spin glass ẞ phase susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure