Glass crystallization in the MnNbOF sub(5)-BaF sub(2)-BiF sub(3) system as probed by Raman spectroscopy

• Published in: Russian journal of inorganic chemistry Vol. 59; no. 8; pp. 831 - 837
• Main Authors: Ignat'eva, L N, Surovtsev, N V, Savchenko, N N, Adishchev, S V, Polishchuk, SA, Marchenko, YuV, Buznik, V M
• Format: Journal Article
• Language: English
• Published: 01-08-2014
• Subjects: Annealing; Band spectra; Crystallization; Formations; Glass; Raman spectroscopy; Schedules
• ISSN: 0036-0236; 1531-8613
• DOI: 10.1134/S0036023614080099

Crystallization of glass samples with compositions of 20MnNbOF sub(5)-40BaF sub(2)-40BiF sub(3), 20MnNbOF sub(5)-30BaF sub(2)-50BiF sub(3), and 30MnNbOF sub(5)-30BaF sub(2)-40BiF sub(3) has been studied using Raman spectroscopy. The study of band formation kinetics in high-frequency and low-frequency regions of the Raman spectrum provided information about the crystallization of the materials. The processes involved in glass crystallization have been found to be strongly dependent on the glass composition and annealing schedule. For 20MnNbOF sub(5)-40BaF sub(2)-40BiF sub(3) and 20MnNbOF sub(5)-30BaF sub(2)-50BiF sub(3) glasses, crystallization is accompanied by liquation, whereas for 30MnNbOF sub(5)-30BaF sub(2)-40BiF sub(3) glass, crystallization does not involve noticeable liquation effects and occurs in one step.