Beeinflussung des Kristallisationsverhaltens von GeS2-Schmelzen durch Schwefel oder Arsen

摘要

Already small admixtures of sulfur and/or arsenic cause a significant diminuation of the crystallization tendency of undercooled GeS2melts and an increase of its glass forming ability. The glass forming tendency of the modified melts was investigated by DTA and indicated as to quantity by the empiric factorGq. The linear rate of crystal growth of H.T.-GeS2on reheating of sulfur containing GeS2glasses was determined. Its temperature dependence can be expressed by a simpleArrhenius-type equation.