Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 704, Issue 1-3, Pages 275-279Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2004.01.060
Keywords
infrared spectra; Li2O center dot B2O3 center dot 2GeO(2) devitrificate; devitrificate structure
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The results of FT-IR spectroscopy studies of the crystal products are presented. A glass, with a composition according to the formula of (Li2OB2O3MeO2)-B-.-Me-. has been synthesized. The glass has been devitrificated at various temperatures (480-750 degreesC) and over various periods of time (0.5-30 h). The analysis of the obtained vibrational spectra allows us to make some conclusions on the structure of the studied devitrificates: they are made of polymerised tetrahedral BO4 and GeO4 units. The additional X-ray diffraction studies allows us to establish the phase composition of the mentioned devitrificates. The identified phase is lithium borogermanate Li[BGeO4] which is a non-ferroelectric polar phase. Therefore, the obtained compound can be used for piezo- and pyroelectric devices. (C) 2004 Elsevier B.V. All rights reserved.
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