Fabrication of surface crystallized glasses with α-Zn 3B2O6 and their optical property

Hirokazu Masai, Takahiro Ueno, Yoshihiro Takahashi, Takumi Fujiwara

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6 Citations (Scopus)


Surface crystallization of metastable α-Zn3B 2O6 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-Zn 3B2O6 glass-ceramics was comparable to that of α-SiO2.

Original languageEnglish
Pages (from-to)2689-2692
Number of pages4
JournalJournal of Non-Crystalline Solids
Issue number44-49
Publication statusPublished - 2010 Oct 1


  • α-ZnBO
  • Optical nonlinearity
  • Oriented cryystalline phase
  • Surface crystallization


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