FLUOROINDATE GLASSES BASED ON THE INF3-BAF2-YF3 SYSTEM

Glass formation was investigated in the InF3-BaF2-SrF2-YF3 quaternary system, Limits of glass-forming areas are given in pseudo-ternary syst ems with different ratios of SrF2 and BaF2. The mean sample thickness is 2-3 mm. Main physical properties, including characteristic temperat ures, density and infrared transmission, have been measured and compar ed with those of standard fluoride classes. Evidence for phase separat ion was observed. This led to the discovery of yttrium-rich fluoride g lasses, close to the YF3-BaF2 binary association. Glass formation in t he InF3-PbF2-YF3 ternary system is also reported. Potential interest o f these glasses for practical applications is discussed.