Structural and Magnetic Phase Transitions in Minerals |
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Page 143
Subrata Ghose J. M. D. Coey, Ekhard K. H. Salje. PHASE TRANSITIONS IN ILVAITE Ca ( Fe2 TN2 = 40K 2+ Fe3 ) Fe2 + Si2O ( OH ) · Ferric character of Fe ( Am ) ( e.v.u. ) 2.2 2.4 2.6 2.8 3.0 80 2.0 20 = TN , 120K Mono Ortho = 343 K ...
Subrata Ghose J. M. D. Coey, Ekhard K. H. Salje. PHASE TRANSITIONS IN ILVAITE Ca ( Fe2 TN2 = 40K 2+ Fe3 ) Fe2 + Si2O ( OH ) · Ferric character of Fe ( Am ) ( e.v.u. ) 2.2 2.4 2.6 2.8 3.0 80 2.0 20 = TN , 120K Mono Ortho = 343 K ...
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... Fe2 + ( B ) 1.938 2.963 1.855 1.924 1.940 1.973 a Finger et al . ( 1982 ) . b ' Ghose et al . ( 1985 ) . с Ghose et ... 2 ) . 2+ The thermal expansion of ilvaite ( Seriphos , Greece ) between 95 and 523 K as determined by low- and high ...
... Fe2 + ( B ) 1.938 2.963 1.855 1.924 1.940 1.973 a Finger et al . ( 1982 ) . b ' Ghose et al . ( 1985 ) . с Ghose et ... 2 ) . 2+ The thermal expansion of ilvaite ( Seriphos , Greece ) between 95 and 523 K as determined by low- and high ...
Page 150
Subrata Ghose J. M. D. Coey, Ekhard K. H. Salje. ( 1 ) O Fe2 + ( A ) • Fe3 + ( A ) ( 2 ) Fig . 7. Hopping mechanism of the intermediate polaron ( Fe2 + -Fe3 + pair with a conducting electron ) . perature was 3.3 x 103 m . Resistivity in ...
Subrata Ghose J. M. D. Coey, Ekhard K. H. Salje. ( 1 ) O Fe2 + ( A ) • Fe3 + ( A ) ( 2 ) Fig . 7. Hopping mechanism of the intermediate polaron ( Fe2 + -Fe3 + pair with a conducting electron ) . perature was 3.3 x 103 m . Resistivity in ...
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