Structural and Magnetic Phase Transitions in Minerals |
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Page 121
... obtained K = 154 GPa and K ' : 2.1 GPa for Fe0.940 as measured up to 20 GPa . Jeanloz and Ahrens ( 1980 ) obtained the equa- tion of state for FeO up to 200 GPa . Below 70 GPa , Ko 185 GPa and K。= 3.2 . Above about 70 GPa , K。= 195 ...
... obtained K = 154 GPa and K ' : 2.1 GPa for Fe0.940 as measured up to 20 GPa . Jeanloz and Ahrens ( 1980 ) obtained the equa- tion of state for FeO up to 200 GPa . Below 70 GPa , Ko 185 GPa and K。= 3.2 . Above about 70 GPa , K。= 195 ...
Page 151
... obtained an activation energy E = ( 1 ) 0.11 eV , in good agreement with the value 0.13 eV obtained from electrical resistivity measurements by Coey et al . X " 1 ( J " .T ? kg ) Charge Localization and Phase Transitions in Ilvaite 151.
... obtained an activation energy E = ( 1 ) 0.11 eV , in good agreement with the value 0.13 eV obtained from electrical resistivity measurements by Coey et al . X " 1 ( J " .T ? kg ) Charge Localization and Phase Transitions in Ilvaite 151.
Page 203
... obtained . For every state , < S > are calculated and < S > are obtained through a Boltzmann average on the levels . The process is similar when a crystal field Hamil- tonian is considered . The matrices are then three times larger ...
... obtained . For every state , < S > are calculated and < S > are obtained through a Boltzmann average on the levels . The process is similar when a crystal field Hamil- tonian is considered . The matrices are then three times larger ...
Contents
Incommensurate Phase Transitions in Quartz and Berlinite | 17 |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
Multicritical Phase Relations in Minerals | 60 |
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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