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Fabrication and microstructure of SiO2−GeO2 sol-gel glass coatings

  • Jing Cheng-bin
  • Zhao Xiu-jian
  • Tao Hai-zhen
  • Wang Xi-na
  • Liu Ai-yun
Article

Abstract

SiO2−GeO2 sols and gel glass coatings with different contents of germanium dioxide were fabricated. Stable and transparent sols could only be obtained when the content of GeO2 was under 35%. It is shown by SEM that only one continuous phase is observed in the coating of 65SiO2·35GeO2 and plenty of Ge, O and Si were all found in it. However, the separated phase is found in the coating of 60SiO2·40GeO2 and a large number of Ge and O. It is proved by the Raman scattering investigation that the separated phase in the coating of 60SiO2 ·40GeO2 is germanium dioxide. The congeries of hydrolystates of Cl3 GeCH2 CH2 COOH play the main role in the formation of the separated phase when the proportion of GeO2 is much higher. Si−O−Ge, Si−O−Si, and Ge−O−Ge bonds form in the coating of 65SiO2·35GeO2 and this coating is homogenous.

Key words

SiO2−GeO2 sol-gel eoating microstructure 

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References

  1. 1.
    Jing Cheng-bin, Zhao Xiu-jian, Han Jianjun,et al. IR Spectra Analysis of SiO2−TiO2−GeO2 Gel Glass of CO2 Laser Transmiting Hollow Waveguide.Journal of Wuhan University of Technology—Mater. Sci. Ed., 2002, 17(4):54–57.Google Scholar
  2. 2.
    YU Jia-guo, ZHAO Xiu-jian, ZHANG Gao-ke,et al. Grain Size and Photocatalytic Activity of Nanometer TiO2 Thin Films Prepared by the Sol-gel Method.Journal of Wuhan University of Technology-Mater. Sci. Ed, 2001, 16(2):1–4Google Scholar
  3. 3.
    K, Susa, I, Matsuyama, S, Satoh. Effect of Chlorination on Optical Absorption in Sol-gel-derived Optical Fiber,Journal of Non-Crystalline Solids, 1994, 169:200–206.CrossRefGoogle Scholar
  4. 4.
    K Susa, I Matsuyama, S Satoh,et al. Sol-gel Derived Ge-doped Silica Glass for Optical Fiber Application, I. Preparation of Gel and Glass and Their Characterization.Journal of Non-Crystaline Solids, 1990, 119:21–26.CrossRefGoogle Scholar
  5. 5.
    Kazuo Kojima, Tsutomu Fujita, Masaaki Yamazaki Yamazaki. Spectroscopic Properties of Er3+-doped Na2O−GeO2 gel,Journal of Non-Crystralline Solids. 1999, 259:63–67.CrossRefGoogle Scholar
  6. 6.
    B G Potter, Jr R. Ochoa, D G Chen,et al. Raman Scattering Investigation ofxGeO2−(1−x)SiO2 Planar Waveguides.Optics Letters, 1992, Vol. 17(19):1349.CrossRefGoogle Scholar
  7. 7.
    A D Razafimahatratra, M Benatsou, M Bouzazoui,et al. UV-induced Permanent Gratings in Sol-gel Germanosilicate Thin Films.Optical Materials, 2001(3):439–448.Google Scholar

Copyright information

© Wuhan University of Technology 2003

Authors and Affiliations

  • Jing Cheng-bin
    • 1
  • Zhao Xiu-jian
    • 1
  • Tao Hai-zhen
    • 1
  • Wang Xi-na
    • 1
  • Liu Ai-yun
    • 1
  1. 1.The State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhanChina

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