Structural study of glasses in the system B 2 O 3 -Bi 2 O 3 -La 2 O 3 -WO 3

作者: Reni Iordanova , Margarita Milanova , Lyubomir Aleksandrov , Atul Khanna

DOI: 10.1016/J.JNONCRYSOL.2017.10.041

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摘要: Abstract New multicomponent (100 − (x − y))·(0.6B2O3·0.4Bi2O3)·xLa2O3·yWO3, x = 0, 10; y = 0 ÷ 40 mol% glasses were obtained by melt quenching technique and its structure examined infrared Raman spectroscopies. Based on the spectral data it was suggested that in absence of La2O3, tungsten incorporates into boro-bismuthate network small quantities through Bi3 + В О W bonds are not formed. Accumulation Bi O stimulates crystallization processes. La2O3 is crucial to connect tungstate units with boro‑bismuthate glass matrix realize amorphous their participation. It supposed higher WO3 content (30 40 mol%) two inconsisted networks formed bismuth-borate one built up BO3, BO4, BiO6 one, mainly WO6. These interconnected lanthanum.

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