Structural and Magnetic Phase Transitions in Minerals |
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Page 196
... planes ( S % , -S % ) , planes of ferromagnetic chains ( −S 3 , −S 4 ) , and antiferromagnetic planes ( S % , -S ) . Here -S means that there is in i a spin -S along a . We now discuss the information on the exchange interactions that ...
... planes ( S % , -S % ) , planes of ferromagnetic chains ( −S 3 , −S 4 ) , and antiferromagnetic planes ( S % , -S ) . Here -S means that there is in i a spin -S along a . We now discuss the information on the exchange interactions that ...
Page 200
... plane , the following equation gives the canting angle 0 : < S > J15 - 2J35 < S1 > cos + 2J12 = Aaß tg ( 2 0 ) Aaα - ABB 2 ( 1 ) The two components of the equation are shown in Fig . 12 as functions of 0. The solution is the value where ...
... plane , the following equation gives the canting angle 0 : < S > J15 - 2J35 < S1 > cos + 2J12 = Aaß tg ( 2 0 ) Aaα - ABB 2 ( 1 ) The two components of the equation are shown in Fig . 12 as functions of 0. The solution is the value where ...
Page 242
... plane wave Framework structures , 166-169 Frustration , 209 Full - potential linearized augmented plane wave ( FLAPW ) , 138 Ilvaite the chemical composition , 142-143 the crystal structure , 143–144 electrical resistivity , 149–150 ...
... plane wave Framework structures , 166-169 Frustration , 209 Full - potential linearized augmented plane wave ( FLAPW ) , 138 Ilvaite the chemical composition , 142-143 the crystal structure , 143–144 electrical resistivity , 149–150 ...
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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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