Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 431, Issue -, Pages 118-125Publisher
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2015.05.011
Keywords
Fluorozirconate phosphate glass; Glass network; Globules; MAS NMR; DTA; SAXS; TEM
Funding
- Russian Foundation for Basic Research [14-03-00041]
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Fluorozirconate-phosphate glasses in the ZrF4-BaF2(SaF(2))-NaPO3 and 53ZrF(4)-30BaF(2)-(17 - x)NaPO3-xMF(3) systems (M = Ga, In, Bi; 1 <= x <= 5) have been prepared and characterized by differential thermal analysis (DTA), F-19 nuclear magnetic resonance (NMR), F-19 and P-31 magic-angle spinning (MAS) NMR, small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). It was shown that glasses consisted of fluorozirconate and phosphate subsystems, which coexisted independently. The additives of metal trifluorides MF3 do not virtually affect thermal characteristics of fluorozirconate subsystem but decrease gradually the crystallization temperature (T-c2) of phosphate subsystem According to the SAXS and TEM data, the fluorozirconate-phosphate glasses have the globular structure with the particles size of 50-560 angstrom. Mixed fluorozirconate-phosphate glasses can be considered as precursors for obtaining new functional materials. (C) 2015 Elsevier B.V. All rights reserved.
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