کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1482814 | 1510488 | 2010 | 4 صفحه PDF | دانلود رایگان |
Surface crystallization of metastable α-Zn3B2O6 was observed in ZnO-B2O3-CaO-K2O-Al2O3 glass after conventional heat treatment. Precipitation of α-Zn3B2O6 with high orientation degree in the transparent glass–ceramics was confirmed by XRD measurement. Transmission electron microscope image showed that crystalline rods of α-Zn3B2O6 were precipitated from the surface of the glass–ceramics with the crystalline orientation of (1 − 2 1) direction. Although the strongly oriented phase was observed in the glass–ceramics, the polarization direction was not strong from the crystal that can bring strong second harmonic generation (SHG). SHG measurement using a powder sample showed that the 2nd optical nonlinearity of α-Zn3B2O6 glass–ceramics was comparable to that of α-SiO2.
Journal: Journal of Non-Crystalline Solids - Volume 356, Issues 44–49, 1 October 2010, Pages 2689–2692