Abstract
A glass of 47.5BaO · 47.5B2O3 · 5Al2O3 (in mol%) having a shorter optical absorption edge (∼236 nm) and suitable glass formation was selected as the mother glass for studying the surface crystallization of β−BaB2O4 · β−BaB2O4 was not the main surface crystallized phase when only a conventional heat treatment was applied. Crystallization of β−BaB2O4 was stimulated due to ultrasonic surface treatment with an ethanol suspension of β−BaB2O4 particles and subsequent heat treatment. After the ultrasonic treatment, β−BaB2O4 was the main crystallized phase. Transparent and dense β−BaB2O4 thin films/glass showed second harmonic generation. The tensor components of the second-order nonlinear optical susceptibility were estimated.
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Ding, Y., Miura, Y. & Osaka, A. Stimulated surface crystallization of β–barium borate on glass due to ultrasonic treatment and second harmonic generation. Journal of Materials Research 11, 495–502 (1996). https://doi.org/10.1557/JMR.1996.0059
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DOI: https://doi.org/10.1557/JMR.1996.0059