Structure and Crystallization of Glasses in the MnNbOF5–BaF2–InF3 System

Abstract

Glasses of the MnNbOF₅–BaF₂–InF₃ system were prepared. The structure, thermal behavior, and crystallization of these glasses were studied by IR and Raman spectroscopy, differential scanning calorimetry (DSC), X-ray powder diffraction, and microscopy. The \(\rm{NbO}_2\rm{F}_4^{3-}\) and \(\rm{InF}_6^{3-}\) ions form a mixed glass network. Glass crystallization occurs in one or two steps depending on the component ratio. The major crystal phases are Ba₃In₂F₁₂ and BaNbOF₅. The obtainability of transparent crystal-glass samples in MnNbOF₅–BaF₂–InF₃ glasses via heat treatment is shown.