Structural and Magnetic Phase Transitions in Minerals |
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Page 20
... unit cell is a right prism built on a base formed by two equal vectors a and b , making an angle of 120 ° and perpen- dicular to c , with unit cell parameters a = b = 5.0 Å and c = 5.46 Å . Although the unit cell contains three SiO2 ...
... unit cell is a right prism built on a base formed by two equal vectors a and b , making an angle of 120 ° and perpen- dicular to c , with unit cell parameters a = b = 5.0 Å and c = 5.46 Å . Although the unit cell contains three SiO2 ...
Page 109
... unit cell but leaves the latter's aspect ratios virtually unchanged . Although the initial effect of temperature on the shape of the unit cell is also negligible , at higher temperatures the model lattice exhi- bits behavior akin to ...
... unit cell but leaves the latter's aspect ratios virtually unchanged . Although the initial effect of temperature on the shape of the unit cell is also negligible , at higher temperatures the model lattice exhi- bits behavior akin to ...
Page 131
... unit cells . minimum length among L ,, Ly , and L. The termination error is sufficiently small when Leut is properly chosen ( 8 to 10 Å or greater ) . In the MD calculation of crystalline systems , the basic cell is composed of several ...
... unit cells . minimum length among L ,, Ly , and L. The termination error is sufficiently small when Leut is properly chosen ( 8 to 10 Å or greater ) . In the MD calculation of crystalline systems , the basic cell is composed of several ...
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