Structural and Magnetic Phase Transitions in Minerals |
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Page 20
... domain structure known as Dauphiné twins , in the a phase . ( Another kind of twinning , producing Brazil twins , is not related to the a - ẞ transition but to the sense of the structural helix . ) The point group symmetry ( 32 ) of the ...
... domain structure known as Dauphiné twins , in the a phase . ( Another kind of twinning , producing Brazil twins , is not related to the a - ẞ transition but to the sense of the structural helix . ) The point group symmetry ( 32 ) of the ...
Page 21
... domain sample by Bach- heimer and Dolino ( 1975 ) is shown in Fig . 2. The agreement with the atomic rotation angle is rather good , while the first - order nature of the transition is clearly demonstrated by the discontinuous variation ...
... domain sample by Bach- heimer and Dolino ( 1975 ) is shown in Fig . 2. The agreement with the atomic rotation angle is rather good , while the first - order nature of the transition is clearly demonstrated by the discontinuous variation ...
Page 28
... domains . ( Courtesy of C. Roucau . ) triangular structures observed goes from 20 to about 100 nm . One major ... domain samples as observed in X - ray diffraction ( Gouhara and Kato , 1984 ) and electron microscopy ( Snoeck et al ...
... domains . ( Courtesy of C. Roucau . ) triangular structures observed goes from 20 to about 100 nm . One major ... domain samples as observed in X - ray diffraction ( Gouhara and Kato , 1984 ) and electron microscopy ( Snoeck et al ...
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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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