INFLUENCE OF ISO-STRUCTURAL SUBSTITUTIONS ON PROPERTIES OF Ge(As,Sb)(S,Se) GLASSES

2 ACKNOWLEDGMENTS 5 LIST OF TABLES 9 LIST OF FIGURES 10 I. CHAPTER I INTRODUCTION 15 I-1 Motivation – Needs for new materials 15 I-2 Precision glass molding (PGM) process 17 I-3 Glasses 18 I-3-1 Fundamentals of glass formation 21 I-3-2 Nucleation of crystals 25 II. CHAPTER II – EXPERIMENTAL PROCEDURE 30