Structural and Magnetic Phase Transitions in Minerals |
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Page 188
... reflections were observed as a function of temperature , in particular those that are due only to a component of the magnetic moments away from the main direction of antiferromagnetism ( Fig . 3 ) . In Fig . 4 the information contained ...
... reflections were observed as a function of temperature , in particular those that are due only to a component of the magnetic moments away from the main direction of antiferromagnetism ( Fig . 3 ) . In Fig . 4 the information contained ...
Page 213
... reflections are magnetic Bragg reflec- .reflections belong to the Cr - type mag- is diffuse scattering due to magnetic close to x = 0.5 and T≥ 2 K , the magnetic intensities depend linearly on tempera- ture , vanishing at a TN ( x ) as ...
... reflections are magnetic Bragg reflec- .reflections belong to the Cr - type mag- is diffuse scattering due to magnetic close to x = 0.5 and T≥ 2 K , the magnetic intensities depend linearly on tempera- ture , vanishing at a TN ( x ) as ...
Page 219
... reflections . The 12R reflections were rather diffuse after short anneal- ing times at low temperatures when only small parts of the crystal were trans- formed . In these cases , the intensities of the diffuse streaks were also ...
... reflections . The 12R reflections were rather diffuse after short anneal- ing times at low temperatures when only small parts of the crystal were trans- formed . In these cases , the intensities of the diffuse streaks were also ...
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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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