Amorphous Insulators and SemiconductorsM.F. Thorpe, M.I. Mitkova The aim of this NATO ASI has been to present an up-to-date overview of current areas of interest in amorphous materials. In order to limit the material to a manageable amount, the meeting was concerned exclusively with insulating and semiconducting materials. The lectures and seminars fill the gap between graduate courses and research seminars. The lecturers and seminar speakers were chosen as experts in their respective areas and the lectures and seminars that were given are presented in this volume. During the first week of the meeting. an emphasis was placed on introductory lectures, mainly associated with questions relating to the glass-formation and the structure of glasses. The second week focused more on research seminars. Each day of the meeting. about four posters were presented during the coffee breaks, and these formed an important focus for discussions. The posters are not reproduced in this volume as the editors wanted to have only larger contributions to make this volume more coherent. This volume is organized into four sections, starting with general considerations of the glass forming ability and techniques for the preparation of different kinds of glasses. |
Contents
STRONG AND FRAGILE LIQUIDS GLASS TRANSITIONS AND POLYAMORPHIC TRANSITIONS IN COVALENTLY BONDED GLASSFORM... | 1 |
KINETICS OF GLASS FORMATION | 21 |
CHALCOGENIDE GLASSES | 45 |
SYNTHESIS STRUCTURE AND SOME MODES OF APPLICATION OF NEW CHALCOGENIDE AND CHALCOHALIDE GLASSES OF SILVER | 71 |
COMPUTER MODELLING OF GLASSES AND GLASSY ALLOYS | 133 |
MOLECULAR DYNAMICS METHODS AND LARGESCALE SIMULATIONS OF AMORPHOUS MATERIALS | 151 |
REVERSE MONTE CARLO SIMULATIONS FOR DETERMINING DISORDERED STRUCTURES | 215 |
REVERSE MONTE CARLO SIMULATIONS OF GLASSES PRACTICAL ASPECTS | 225 |
ONEFOLD COORDINATED ATOMS CONSTRAINT THEORY AND NANOINDENTATION HARDNESS | 339 |
SILICATES AND SOFT MODES | 349 |
VIBRATIONAL DYNAMICS IN GLASSES | 385 |
OPTICAL STUDIES OF NANOPHASE TITANIA | 395 |
ELECTRONIC STRUCTURE METHODS WITH APPLICATIONS TO AMORPHOUS SEMICONDUCTORS | 405 |
Defects and Disorder | 437 |
TUNNELING STATES | 469 |
ELECTRONIC STRUCTURE OF AMORPHOUS INSULATORS AND SEMICONDUCTORS BY XRAY PHOTOELECTRON AND SOFT XRAY SPE... | 497 |
A THERMODYNAMIC MODEL FOR THE CALCULATION OF THE PHYSICAL PROPERTIES AND STRUCTURAL CHARACTERISTICS OF G... | 235 |
HIGH RESOLUTION AND MULTIDIMENSIONAL NUCLEAR MAGNETIC RESONANCE PROBES OF GLASS STRUCTURE | 245 |
POROUS SILICA | 255 |
THE STRUCTURE AND MECHANICAL PROPERTIES OF NETWORKS | 289 |
THE ELASTIC MODULI OF RANDOM NETWORKS CALCULATIONS | 329 |
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Common terms and phrases
a-Si aerogels algorithm alloys Amorphous Insulators amorphous silicon amorphous solids anatase atoms bond angle calculated cell chalcogenide glasses Chem chemical cluster configurations constraint counting constraints coordination number correlation function corresponding covalent cristobalite crystal crystalline curves dangling bond defects density disorder displacive phase transitions distribution elastic electronic structure energy entropy equation equilibrium experiment Figure floppy modes Fourier fractal fracton frequency glass transition glassforming hydrogen interaction kinetic lattice Lett liquid materials matrix MD simulations measurements melts method molecular dynamics neutron diffraction neutron scattering Non-Cryst obtained pair parameters particles peak phase transitions phonon Phys Physics potential problem properties Raman random network range reciprocal space region relaxation Reverse Monte Carlo rings sample scale silica SiO2 specific heat spectra structural models structure factor technique temperature dependence tetrahedra theory thermal thermodynamic Thorpe transition temperature valence Vashishta vibrational vitreous silica Weaire X-ray