Glasses and their crystallization in the (1 â Ñ
)KNbO3·Ñ
SiO2 system at low glass-forming oxide contents, 0 ⩽ Ñ
 ⩽ 0.35
Keywords: عینک های ویژه و مواد; Glass formation; Glass transition; Oxide glasses; Alkali silicates; Special glasses and materials; Molten salts;