Structural and Magnetic Phase Transitions in Minerals |
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Page 217
... phases , however , is far from understood . Several models have been discussed , such as growth models ( e.g. , Trigunayat and Chadha , 1971 ) , the entropy model of Jagodzinski ( 1954 ) , and ... Polytypic Phase Transition 2H-12R in PbI2.
... phases , however , is far from understood . Several models have been discussed , such as growth models ( e.g. , Trigunayat and Chadha , 1971 ) , the entropy model of Jagodzinski ( 1954 ) , and ... Polytypic Phase Transition 2H-12R in PbI2.
Page 218
... polytypic stackings . Like most other materials of the AX2 type , PbI2 possesses polytypes with long repetition units , several of which have been found experimentally as pure or dominant phases in as - grown PbI2 . An infinite number ...
... polytypic stackings . Like most other materials of the AX2 type , PbI2 possesses polytypes with long repetition units , several of which have been found experimentally as pure or dominant phases in as - grown PbI2 . An infinite number ...
Page 234
... polytypic materials , as does the nonideality of mixing for most crystals . Following this idea , the physical origin of the stability of one of the polytypic phases is related to its Gibbs energy and is mainly an enthalpy effect . The ...
... polytypic materials , as does the nonideality of mixing for most crystals . Following this idea , the physical origin of the stability of one of the polytypic phases is related to its Gibbs energy and is mainly an enthalpy effect . The ...
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