Journal of Inorganic Materials ›› 2020, Vol. 35 ›› Issue (4): 431-438.DOI: 10.15541/jim20190170

Special Issue: 功能陶瓷论文精选(二)

• RESEARCH PAPER • Previous Articles     Next Articles

Dielectric and Energy Storage Property of BaTiO3-ZnNb2O6 Ceramics

WANG Tong1,WANG Yuanhao1,YANG Haibo1(),GAO Shuya1,WANG Fen1,LU Yawen2   

  1. 1. Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China
    2. Xianyang Research and Design Institute of Ceramics Co. Ltd, Xianyang 712000, China
  • Received:2019-04-22 Revised:2019-06-12 Published:2020-04-20 Online:2019-09-12
  • Supported by:
    National Natural Science Foundation of China(51702196);China Postdoctoral Science Foundation(2017M620435);Natural Science Foundation of Shaanxi Province(2017JQ5088);Scientific Research Program Funded by Shaanxi Provincial Education Department(17JK0105);Research Starting Foundation of Shaanxi University of Science and Technology(BJ16-07)

Abstract:

(1-x)BaTiO3-xZnNb2O6 (x=0.5mol%, 1mol%, 1.5mol%, 2mol%, 3mol%, 4mol%) (BTZN) ceramics were synthesized by solid state method. The sintering temperature, structure, dielectric property and ferroelectric property of BTZN ceramics were systematically investigated. The sintering temperature of BTZN ceramics decreased with increasing ZnNb2O6 content. XRD results show that the second phase Ba2Ti5O12 was observed when the content of ZnNb2O6 reached 3mol%. The dielectric measurements result showed that with increasing ZnNb2O6 content, the dielectric constant of BTZN ceramics decreased gradually, while the frequency stability of dielectric constant increased gradually. The temperature dependence of dielectric constant results showed that all BTZN ceramics met the characteristics of X8R capacitors. Polarization values of BTZN ceramics decreased with increasing ZnNb2O6 content. The dielectric breakdown strength of 240 kV/cm and a recoverable energy density of 1.22 J/cm 3 were achieved in the sample of x=4mol%.

Key words: BaTiO3, ceramics, dielectric property, energy storage property

CLC Number: