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Elsevier, Journal of Solid State Chemistry, 6(178), p. 1888-1897

DOI: 10.1016/j.jssc.2005.03.035

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Crystallization and second harmonic generation in thermally poled niobium borophosphate glasses

Journal article published in 2005 by Artem Malakho, Marc Dussauze ORCID, Evelyne Fargin, Bogdan Lazoryak, Vincent Rodriguez ORCID, Frédéric Adamietz
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Crystallization of glasses with compositions (1−x)(0.95 NaPO3+0.05 Na2B4O7)+xNb2O5, x=0.4, 0.43, 0.45, 0.48 was investigated by differential scanning calorimetry and X-ray powder diffraction. Crystallization of two phases was observed in the glasses with x=0.43–0.48. First phase is a sodium niobate with the structure of tetragonal tungsten bronze (Tc~720-760°C) and second phase is Na4Nb8P4O32 (Tc~830-850°C). The crystallization of sodium niobate is correlated with increasing of nonlinear optical efficiency reported for thermally poled glasses with x>0.4.