Structural and Magnetic Phase Transitions in Minerals |
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Page 65
... direction favor ordering , but interactions in some other direction favor clustering ( we will use the notation = to indicate a direc- tion in which ordering is favored and to indicate a direction in which clustering is favored ) . In ...
... direction favor ordering , but interactions in some other direction favor clustering ( we will use the notation = to indicate a direc- tion in which ordering is favored and to indicate a direction in which clustering is favored ) . In ...
Page 203
... direction of the mode ( G , G g ) , which would be allowed by the weakness of the single - ion anisotropies of the Mn2 + ions and would give a x1 character to the susceptibility . It appears that such a flip of the magnetic configura ...
... direction of the mode ( G , G g ) , which would be allowed by the weakness of the single - ion anisotropies of the Mn2 + ions and would give a x1 character to the susceptibility . It appears that such a flip of the magnetic configura ...
Page 204
... direction a , at 4.2 K , on composition is well explained on the basis of both the observed cation distribution and the single - ion anisotropies , which were assumed for Fe2SiO4 . While for x = 0 , α = a due to the very small ...
... direction a , at 4.2 K , on composition is well explained on the basis of both the observed cation distribution and the single - ion anisotropies , which were assumed for Fe2SiO4 . While for x = 0 , α = a due to the very small ...
Contents
Incommensurate Phase Transitions in Quartz and Berlinite | 17 |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
Multicritical Phase Relations in Minerals | 60 |
Copyright | |
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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