Structural and Magnetic Phase Transitions in MineralsS. Ghose, J.M.D. Coey, E. Salje This volume in Advances in Physical Geochemistry presents the latest synthesis of theory and experimental data pertaining to structural and magnetic phase transitions in a variety of geochemically important minerals. The book is the first to cover the impact of this rapidly progressing area of solid state physics in earth sciences and reflects its growing significance for mineralogy and petrology. |
From inside the book
Results 1-5 of 32
Page 6
... temperature dependence of the order parameter of the Al , Si order- ing ( C1 - I1 phase transition ) becomes : 1 1 AFod = 1⁄2 ɑod ( T – Tod — NAbYod ) Qod + ¦ bod Qod - 1 + / Cod Qodi AFod / Qod = 0 , which shows clearly that the phase ...
... temperature dependence of the order parameter of the Al , Si order- ing ( C1 - I1 phase transition ) becomes : 1 1 AFod = 1⁄2 ɑod ( T – Tod — NAbYod ) Qod + ¦ bod Qod - 1 + / Cod Qodi AFod / Qod = 0 , which shows clearly that the phase ...
Page 8
... temperature dependence of the b and c lattice parameters , we see that x4 and x are essentially determined by cos a * and cos y , respectively . The amplitude of the spontaneous strain is defined as : Ssp = · ( x2 + x2 ) 1⁄2 . 12 The ...
... temperature dependence of the b and c lattice parameters , we see that x4 and x are essentially determined by cos a * and cos y , respectively . The amplitude of the spontaneous strain is defined as : Ssp = · ( x2 + x2 ) 1⁄2 . 12 The ...
Page 10
... TEMPERATURE ( K ) Fig . 2. Temperature evolution of ( a ) the diagonalized spontaneous strain of the II - PI phase transition and ( b ) the square of the amplitude of the spontaneous strain . The tempera- ture dependence of ɛ3 in ( b ) ...
... TEMPERATURE ( K ) Fig . 2. Temperature evolution of ( a ) the diagonalized spontaneous strain of the II - PI phase transition and ( b ) the square of the amplitude of the spontaneous strain . The tempera- ture dependence of ɛ3 in ( b ) ...
Page 12
... Temperature dependence of the excess free energy AF , excess internal energy △ U , excess entropy AS , and excess specific heat AC for thermodynamic equilibrium of albite . The arrow at 1251 K indicates the temperature of the monalbite ...
... Temperature dependence of the excess free energy AF , excess internal energy △ U , excess entropy AS , and excess specific heat AC for thermodynamic equilibrium of albite . The arrow at 1251 K indicates the temperature of the monalbite ...
Page 13
... temperature dependence , which should not be ignored in thermodynamic calculations for mineral reactions involving feldspar ( Fig . 4 ) . The coupling behavior between two order parameters can now be depicted con- veniently in order ...
... temperature dependence , which should not be ignored in thermodynamic calculations for mineral reactions involving feldspar ( Fig . 4 ) . The coupling behavior between two order parameters can now be depicted con- veniently in order ...
Contents
1 | |
17 | |
Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |
Multicritical Phase Relations in Minerals | 60 |
Equation of State and Possible Critical Phase Transitions | 91 |
HighSpin to LowSpin Transition of IronII Oxides | 113 |
Molecular Dynamics Studies of Polymorphism of SiO2 | 129 |
Charge Localization and Associated Crystallographic and Magnetic | 141 |
Magnetic Phase Transitions in Silicate Minerals | 162 |
Magnetic Phase Transition in Olivines M2SiO4 | 185 |
Index 241 | 240 |
Other editions - View all
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 cation distributions Chem chemical cluster Coey components composition coupling crystal field crystal structure crystallographic cubic decreases density disordered Dolino Earth Planet electron equilibrium experimental Fe² Fe2+ Fe2SiO4 Fe³ Fe3+ feldspar ferromagnetic free energy Geophys Ghose grunerite high-spin ilvaite inc phase incommensurate phase interactions ions Jeanloz Landau theory lattice layers Lindsley long-range order low temperatures lower mantle LS transition M2 sites magnetic order magnetic properties magnetic structure Matsui measurements Mineral Mn2SiO4 Mössbauer neutron diffraction observed octahedral olivines orbital order parameter orthopyroxene orthorhombic oxides pairs perovskite phase diagrams phase transition Phys polytypes polytypic phases predicted pyroxenes quartz Salje sample shown in Fig silicates SiO2 SiO4 solid solutions space group spin glass ẞ phase susceptibility symmetry temperature dependence thermal expansion thermodynamic tion transformation X-ray zero pressure