Nucleation of SodiumZinc Phosphate Crystals
in SodiumZinc Phosphate Glass

G. A. Sycheva

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences,
ul. Odoevskogo 24/2, St. Petersburg, 199155 Russia

Abstract—The kinetics of nucleation of the sodium–zinc phosphate crystals Na₂ZnP₂O₇ in the 10Na₂O ·
57ZnO · 33P₂O₅ glasses is studied. The glasses are synthesized under various conditions and exhibit different
light scattering intensities. It is found that an increase in the light scattering intensity in the initial glass is
accompanied with an increase in the stationary rate of sodium–zinc phosphate crystal nucleation without
changes in temperature of the maximum nucleation rate. It is assumed that crystals nucleate at small gas bub-
bles, and their number determines the light scattering intensity in glasses.

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