Glassy Disordered Systems : Glass Formation and Universal Anomalous Low-Energy Properties /

Mostrar otras versiones (1)

The present book describes the fundamental features of glassy disordered systems at high temperatures (close to the liquid-to-glass transition) and for the first time in a book, the universal anomalous properties of glasses at low energies (i.e. temperatures/frequencies lower than the Debye values)...

Descripción completa

Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Klinger, Michael I.
Autor Corporativo: World Scientific (Firm)
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Singapore ; Hackensack, N.J. : World Scientific Pub. Co., Ã2013.
Temas:
Glass > Analysis.
Verre > Analyse.
TECHNOLOGY & ENGINEERING > Material Science.
Glass > Analysis
Acceso en línea:Texto completo
Tabla de Contenidos:
  • 1. General description of glasses and glass transition. 1.1. Metastability and disorder. Types of glasses. 1.2. Qualitative description of glass (liquid-to-glass) transition. 1.3. Kinetic and thermodynamic properties. 1.4. Slow relaxation processes
  • 2. Models of glassy (topologically disordered) structures. 2.1. Characteristics of glassy structures. 2.2. Homogeneous (ideal) models. 2.3. Inhomogeneous (cluster) models
  • 3. Some theoretical models of glass transition. 3.1. Vogel-Fulcher relation and "entropy crisis". 3.2. Role of configurational entropy, free-volume effects and "defects" diffusion. 3.3. Mode-coupling model: Dynamic liquid-glass transition
  • 4. Kohlrausch-William-Watt (KWW) relaxation. 4.1. General features of slow relaxation processes. 4.2. Parallel-diffusion relaxation models. 4.3. Correlated, hierarchically constrained, relaxation models. 4.4. Concluding remarks
  • 5. Origin of anomalous low-energy properties of glasses
  • 6. Experimental background for anomalous low-energy atomic dynamics. 6.1. Very low temperatures and frequencies. 6.2. Moderately low temperatures and frequencies
  • 7. Soft-mode model of low-energy atomic dynamics. 7.1. Atomic soft modes and related potentials. 7.2. Probability distribution densities. 7.3. Low-energy excitations: density of states and concentration. 7.4. Interaction of soft-mode excitations with acoustic phonons
  • 8. Soft-mode excitations of very low and "intermediate" energies. 8.1. Soft-mode tunneling states (independent two-level systems). 8.2. Soft-mode excitations of "intermediate" energies
  • 9. Tunneling states as very low energy limit case. 9.1. Standard tunneling model: independent two-level systems. 9.2. Advanced tunneling model: interacting two-level systems.
  • 10. Soft-mode excitations of moderately-low energies (boson peak). 10.1. Ioffe-Regel crossover for acoustic phonons as origin of boson peak. 10.2. Independent soft-mode vibrational excitations. 10.3. Total vibrational density of independent soft-mode states. 10.4. Generalization for interacting harmonic excitations. 10.5. Total vibrational density of states: dynamic properties. 10.6. Width (attenuation) of acoustic phonons. 10.7. Thermal vibrational properties of glasses
  • 11. On universal and non-universal dynamic properties of glasses. 11.1. Very low temperatures and frequencies. 11.2. Moderately low temperatures and frequencies
  • 12. Other models for glasses with high frequency sound. 12.1. Theoretical mode-coupling model. 12.2. Theoretical random-matrix model. 12.3. Comparison with the soft-mode model
  • 13. Recent models for glasses with no high-frequency sound. 13.1. Boson peak: Ioffe-Regel crossover at elastic acoustic scattering. 13.2. Dynamic and thermal anomalies at elastic acoustic scattering. 13.3. Boson peak due to spatially random springs constants. 13.4. Nakayama model: boson peak vs strongly localised modes
  • 14. Anomalous electron properties of semiconducting glasses. 14.1. Basic experimental data. 14.2. Negative-U centres: Anderson model. 14.3. Street-Mott and Kastner-Adler-Fritzsche models. 14.4. Qualitative analysis of negative-U centres
  • 15. Soft-mode model of localized electron states in the glasses. 15.1. General considerations. 15.2. Model of negative-U centres: basic relations and approximations. 15.3. Adiabatic potentials and electron energy. 15.4. Basic features of self-trapped states and negative-U centres. 15.5. Density of states and thermal equilibrium properties. 15.6. Concluding remarks
  • 16. Additional manifestations of soft modes in glasses. 16.1. Negative-U centres model of photostructural changes in semiconducting glasses. 16.2. Gap-light frequency dependence. 16.3. Temperature dependence
  • 17. Summary, conclusions and problems.

Ejemplares similares