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The following series of articles focuses attention on five important groups of glassy materials: silica, oxynitride, phosphate, chalcogenide, and halide glasses. Each author has made a concerted effort to indicate the nature of the scientific questions and technological applications which make his individual area of materials research both exciting and timely. Nevertheless, these five articles can cover only a few of the identifiable areas of glass science and technology which are active and find new importance today. A broader picture can be obtained by perusal of the general texts listed in References 1-13.
Glasses are usually defined as a sub-class of amorphous materials which exhibit a glass transition and are formable by quenching from the melt. They include numerous oxides, chalcogenides, halides, polymers, organic glasses, and amorphous metals. We have chosen to discuss only the first three of these groupings, which largely comprise the traditional inorganic glasses. The oxide glasses are only partly covered by our first three articles; completeness would require descriptions of activities involving alkalisilicate glasses, alumino-silicates, boro-silicates, boro-phosphates, and more.
Amorphous materials which are not viewed as glasses include tetrahedral amorphous semiconductors like a-Ge and a-Si, either pure or containing alloy levels of H, F, Cl, B, P, or other elements.
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- Copyright © Materials Research Society 1987