Structural and Magnetic Phase Transitions in Minerals |
From inside the book
Results 1-3 of 28
Page 72
... cluster ) . The PA ( or GPA ) is a CVM approximation in which the largest clusters are sites ( one - body clusters ) . The advantages of higher - order CVM approximations are that more information about the symmetry of a system can be ...
... cluster ) . The PA ( or GPA ) is a CVM approximation in which the largest clusters are sites ( one - body clusters ) . The advantages of higher - order CVM approximations are that more information about the symmetry of a system can be ...
Page 152
... cluster of [ Fe2O10 ] 15- with a short Fe2 + -Fe3 + bond has been considered by Sherman ( 1986 ) . In such a cluster , Fe - Fe bonding occurs through an overlap of the Fea ( t28- Feb ( 12 ) orbitals . Provided the Fe - Fe separation is ...
... cluster of [ Fe2O10 ] 15- with a short Fe2 + -Fe3 + bond has been considered by Sherman ( 1986 ) . In such a cluster , Fe - Fe bonding occurs through an overlap of the Fea ( t28- Feb ( 12 ) orbitals . Provided the Fe - Fe separation is ...
Page 213
... cluster size is roughly 450 ( ± 100 ) Å . In phase III the cluster size remains finite with L = 760 ( +230 ) Å for the pure Fe - garnet . In samples with x = 0.50 it may take several hours before the antiferromagnetic sublattice ...
... cluster size is roughly 450 ( ± 100 ) Å . In phase III the cluster size remains finite with L = 760 ( +230 ) Å for the pure Fe - garnet . In samples with x = 0.50 it may take several hours before the antiferromagnetic sublattice ...
Contents
Incommensurate Phase Transitions in Quartz and Berlinite | 17 |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
Multicritical Phase Relations in Minerals | 60 |
Copyright | |
7 other sections not shown
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 |
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