The Physics of Structural Phase Transitions
(Sprache: Englisch)
Phase transitions in which crystalline solids undergo structural changes present an interesting problem in the interplay between the crystal structure and the ordering process. This text, intended for readers with some prior knowledge of condensed-matter...
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Klappentext zu „The Physics of Structural Phase Transitions “
Phase transitions in which crystalline solids undergo structural changes present an interesting problem in the interplay between the crystal structure and the ordering process. This text, intended for readers with some prior knowledge of condensed-matter physics, emphasizes the basic physics behind such spontaneous structural changes in crystals. Starting with the relevant thermodynamic principles, the book discusses the nature of order variables and their collective motion in a crystal lattice; in a structural phase transition a singularity in such a collective mode is responsible for the lattice instability, as revealed by soft phonons. This mechanism is analogous to the interplay of a charge-density wave and a periodically deformed lattice in low-dimensional conductors. The text also describes experimental methods for modulated crystal structures and gives examples of structural changes in representative systems. The book is divided into two parts. The first, theoretical, partincludes such topics as: the Landau theory of phase transitions; statistics, correlations and the mean-field approximation; pseudospins and their collective modes; soft lattice modes and pseudospin condensates; lattice imperfections and their role in the phase transitions of real crystals. The second part discusses experimental studies of modulated crystals using x-ray diffraction, neutron inelastic scattering, light scattering, dielectric measurements, and magnetic resonance spectroscopy.
Phase transitions in which crystalline solids undergo structural changes present an interesting problem in the interplay between the crystal structure and the ordering process. This text, intended for readers with some prior knowledge of condensed-matter physics, emphasizes the basic physics behind such spontaneous structural changes in crystals. Starting with the relevant thermodynamic principles, the book discusses the nature of order variables and their collective motion in a crystal lattice; in a structural phase transition a singularity in such a collective mode is responsible for the lattice instability, as revealed by soft phonons. This mechanism is analogous to the interplay of a charge-density wave and a periodically deformed lattice in low-dimensional conductors. The text also describes experimental methods for modulated crystal structures and gives examples of structural changes in representative systems. The book is divided into two parts. The first, theoretical, part includes such topics as: the Landau theory of phase transitions; statistics, correlations and the mean-field approximation; pseudospins and their collective modes; soft lattice modes and pseudospin condensates; lattice imperfections and their role in the phase transitions of real crystals. The second part discusses experimental studies of modulated crystals using x-ray diffraction, neutron inelastic scattering, light scattering, dielectric measurements, and magnetic resonance spectroscopy.
Inhaltsverzeichnis zu „The Physics of Structural Phase Transitions “
- Thermodynamic Principles and the Landau Theory of Phase Transitions- Order-Disorder Statistics, Short-Range Correlations and the Mean-Field Approximation
- Collective Pseudospins in Displacive Phase Transitions and the Born-Huang Theory
- Soft Modes, Pseudospin Condensates and Lattice Anharmonicity in the Critical Region
- Dynamics of Collective Pseudospins and Long-Range Order
- Diffuse X-Ray Diffraction and Neutron Inelastic Scattering from Modulated Crystals
- Light Scattering and Dielectric Studies on Structural Phase Transitions
- The Spin-Hamiltonian and Magnetic Resonance Spectroscopy
- Magnetic Resonance Sampling and Nuclear Relaxation Studies on Modulated Crystals
- Structural Phase Transitions in Miscellaneous Systems
- Epilogue
Bibliographische Angaben
- Autor: Minoru Fujimoto
- 2004, New ed., 278 Seiten, Maße: 23,5 cm, Gebunden, Englisch
- Verlag: Springer, New York
- ISBN-10: 0387407162
- ISBN-13: 9780387407166
Sprache:
Englisch
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