Structure of a Nanocrystalline Phase with Second Harmonic Generation

Abstract
Phases of the 10K$_2$O-4Na$_2$O-14Nb$_2$O$_5$-72TeO$_2$ glass-ceramic with second harmonic generation were studied by using an energy dispersive method in X-ray spectroscopy and XRD. The Bravais lattice of 10K$_2$O-4Na$_2$O-14Nb$_2$O$_5$-72TeO$_2$ glass-ceramic was basically a face-centered cubic structure from the results of sin2??. The cubic crystalline phase of this oxygen-deficient fluorite-type structure was found to be slightly distorted. Knowledge of the crystal structure of the tellurite-based glass-ceramic is believed to be very important for the development and application of new nonlinear optical materials
Keywords: SHG, TeO$_2$, Nanocrystals, Nonlinear optical materials, Glass-ceramic

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