Structural and Magnetic Phase Transitions in Minerals |
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Page 11
... described by aAFtot / aQ = 0 ǝAF tot / aQod = 0 leading to the two basic equations for the two order parameters ao ( T − T * ) Q + bQ3 + cQ + dead = 0 aodo ( T - Tod * ) Qod + bodQ3d + Cod Qod = dQ = 0 The entire thermodynamic behavior ...
... described by aAFtot / aQ = 0 ǝAF tot / aQod = 0 leading to the two basic equations for the two order parameters ao ( T − T * ) Q + bQ3 + cQ + dead = 0 aodo ( T - Tod * ) Qod + bodQ3d + Cod Qod = dQ = 0 The entire thermodynamic behavior ...
Page 196
... described by the following succession : planes of ferromagnetic chains ( S , S % ) , antiferromagnetic planes ( S ... described by the parameters Jij , many of which are equiv- Table 5. The four magnetic groups for sites M1 and M2 ...
... described by the following succession : planes of ferromagnetic chains ( S , S % ) , antiferromagnetic planes ( S ... described by the parameters Jij , many of which are equiv- Table 5. The four magnetic groups for sites M1 and M2 ...
Page 202
... described by a real Cartesian tensor of order two , Ĉ , acting on states a > , a = a , b , c whose wave functions , real , are those of a p - state ( Zimmer- mann , 1975 ) . Then , besides interion interactions ( magnetic dipolar and ...
... described by a real Cartesian tensor of order two , Ĉ , acting on states a > , a = a , b , c whose wave functions , real , are those of a p - state ( Zimmer- mann , 1975 ) . Then , besides interion interactions ( magnetic dipolar and ...
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