Formation and properties of GeS2-Ga2S3-KX (X=Cl, Br, I) glasses

The glass forming regions of GeS2-Ga2S3-KX (X=Cl, Br, I) system glasses wer e determined and homogeneous glasses it-ere prepared. The maximum content i n KI was 34 mol%. Their highest glass transition temperature (Td was 286 de greesC and optical transmission was from 0.45 to 11.5 mum. The transparent region of these glasses shifted towards shorter wavelengths after the addit ion of KX. The conductivity of these glasses was from 10(-11) to 10(-9)Scm( -1) at 23 degreesC. The chemical durability of these glasses was sufficient ly good for applications. These glasses are of interest as potential mid-in frared and waveguide materials.