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 146
... susceptibility measurements ( Ghosh et al . , 1987 ) . Below 343 K , a con- tinuous rotation of the molar susceptibility K has been observed down to 90 K ; the symmetry of the magnetic susceptibility ellipsoid remains unchanged in this ...
... susceptibility measurements ( Ghosh et al . , 1987 ) . Below 343 K , a con- tinuous rotation of the molar susceptibility K has been observed down to 90 K ; the symmetry of the magnetic susceptibility ellipsoid remains unchanged in this ...
Page 193
... susceptibility along c in Fe2- SiO4 . It is nearly unaffected by the ordering transition and goes on increasing below TN as a paramagnetic susceptibility would . Then it decreases below T≈20 K. The maximum seen at 23 K in the powder ...
... susceptibility along c in Fe2- SiO4 . It is nearly unaffected by the ordering transition and goes on increasing below TN as a paramagnetic susceptibility would . Then it decreases below T≈20 K. The maximum seen at 23 K in the powder ...
Page 211
... susceptibility is smaller than the field cooled susceptibility — an observation typical for spin glasses . Losses in the sample in oscillatory fields are given by the imaginary part x " . Measured at very low frequencies 0.01 ≤ v ...
... susceptibility is smaller than the field cooled susceptibility — an observation typical for spin glasses . Losses in the sample in oscillatory fields are given by the imaginary part x " . Measured at very low frequencies 0.01 ≤ v ...
Contents
Preface | 1 |
Incommensurate Phase Transitions in Quartz and Berlinite | 17 |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
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 Co₂SiO4 Coey components composition coupling crystal field crystal structure crystallographic decreases density disordered Dolino Earth Planet electron entropy equilibrium experimental Fe² Fe2+ Fe2SiO4 Fe³ feldspar ferromagnetic free energy Fuess Geophys Ghose grunerite high-spin ilvaite inc phase incommensurate phase interactions ions Jeanloz Landau theory lattice layers Lindsley long-range order low temperatures lower mantle LS transition M2 sites magnetic order Magnetic properties magnetic structure Matsui measurements MgSiO3 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 solid solutions space group spin glass ẞ phase susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure