CRCU

Chemical Research in Chinese Universities ›› 2003, Vol. 19 ›› Issue (3): 347-349.

• Articles • Previous Articles     Next Articles

Dielectric Properties of Nanocrystalline TiO2 Prepared by the Stearic Acid Gel Method

DONG Wei, RUAN Sheng-ping, ZHANG Xin-dong, GUO Wen-bin, LIU Cai-xia, ZHANG Shuang, JIA Cui-ping, PAN Jian-xuan, CHEN Wei-you   

  1. State Key Laboratory on Integrate Optoelectronics, College of Electronic Sciences & Engineering Jilin University, Changchun 130023, P. R. China
  • Received:2002-06-26 Online:2003-08-24 Published:2011-08-06
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.60074031) and the Science Foundation of Jilin Province(No.20010319).

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Abstract: Nanocrystalline TiO2 was prepared by means of a stearic acid gel method. The product was investigated by differential thermal analysis, thermogravimetric analysis, X-ray powder diffraction and transmission electronic microscopy(TEM). The results of the dielectric properties tested indicate that the dielectric constant of anatase-form nanocrystalline TiO2 is much higher than that of the coarse crystal. The dielectric constant of the nanocrystalline material is not related with the amplitude of an external AC field in a certain range.

Key words: Nanocrystalline TiO2, Dielectric constant, Dielectric loss