Insulating and semiconducting glasses / editor, P. Boolchand.

Includes bibliographical references and indexes.

Print version record.

Contents -- Preface -- Editorial Consultants -- 1 Glass Formation and the Nature of the Glass Transition -- 1. Introduction: Questions, Concepts, and Terminology -- 1.1. What is a glass? -- 1.2. Ergodicity-breaking and the glass transition -- 2. Origin of Glassforming Ability -- 3. The Kauzmann Paradox and the Potential Energy Hypersurface -- 4. Relaxation and Entropy -- 4.1. Relaxation in the non-ergodic state -- 4.2. Relaxation in the ergodic domain -- 4.3. Relaxation in the non-ergodic state near Tg

4.4. Entropy at the glass transition and the validity of Ehrenfest-like thermodynamic relations5. Kinetic Aspects of Vitrification: Strong and Fragile Liquids -- 5.1. The glass transition in covalent systems -- 6. View from the Solid -- 7. Polyamorphism -- 7.1. First order transitions in liquid silicon -- 7.2. Strong and fragile SiO2 -- Acknowledgments -- References -- 2 Dual Nature of Molecular Glass Transitions -- 1. Introduction -- 2. Prototypical Molecular Glasses -- 3. Kinetic Data -- 4. Diffraction Data: The Upper Glass Transition

""5. NMR Relaxation Data""""6. Dual Relaxation Modes""; ""References""; ""3 The Generic Phenomenology of Glass Formation""; ""1. Introduction and Historic Background""; ""2. Basic Phenomenological Dependences""; ""3. Time of Molecular Relaxation in Glass Forming Liquids""; ""4. Temperature Dependence of the Structural Parameter Î?""; ""5. The Kinetic Conditions for Vitrification and the Definition of the Vitreous State""; ""6. Thermodynamic Phase Transitions and the Process of Vitrification""; ""7. Conclusions and Outlook""; ""References""; ""4 The Structure and Rigidity of Network Glasses""

1. Introduction2. Continuous Random Networks -- 2.1. Hand-built CRN models -- 2.2. Computer-built CRN models -- 2.2.1. Guttman model -- 2.2.2. Wooten-Weaire method -- 3. Constraint Counting -- 4. Generic Rigidity Percolation -- 4.1. The pebble game -- 4.2. Two dimensional central force networks -- 4.3. Three dimensional bond bending networks -- 5. Surface Floppy Modes -- 5.1. Basic counting techniques -- 5.2. Problems with periodic boundary conditions -- 6. Experiments -- 6.1. Bulk materials -- 6.2. Correction for dangling bonds

6.3. Silicate networks7. Summary -- Acknowledgments -- References -- 5 Glass Structure by Scattering Methods and Spectroscopy -- A. X-RAY AND NEUTRON DIFFRACTION -- 1. Introduction -- 1.1. The random network theory -- 1.2. Chalcogenide systems -- 1.3. Multi-component glasses -- 1.4. Superstructural units -- 2. Quantification of Amorphous Solid Structures -- 2.1. Range I: The structural unit -- 2.2. Range II: The interconnection of adjacent structural units -- 2.3. Range III: The network topology/order beyond the adjacent structural unit

This book reviews principal topical issues on the basic science of glasses and amorphous thin-films. It also includes select applications of these materials in current and evolving technologies, including optical recording, imaging, solar cells, battery technology and field-emission displays. The glass systems of interest include oxides, chalcogenides and chalcohalides of the group III, IV and V elements, as well as amorphous thin-films of the group IV elements. Glass formation in covalent melts can be understood in terms of new ideas based on constraint counting algorithms which have led to the fragile-strong classification and to the concept of rigidity transition. Vibrational excitations and characterization of the atomic scale structure at various length scales are addressed by an array of experimental probes, including X-ray and neutron scattering, Brillouin scattering, Raman scattering and infrared reflectance, solid state nuclear magnetic resonance, nuclear quadrupole resonance and Mossbauer spectroscopy. Chapters are also devoted to the physics of electronic transport in amorphous materials, to the physics of tunneling states in crystalline and amorphous solids, and the physics of light-induced effects in glasses. In addition, a chapter is devoted to the rapidly evolving field of numerical simulations of disordered systems by computer modeling. Each of these topics is discussed by experts who have made significant contributions to the field. The book can serve as a text for a graduate course in glass science. For an established researcher, it provides, in a concise form, a large body of experimental data on the basic materials research aspect of these fascinating materials.

English.

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