Fabrication and electrical properties of textured Ba(Zr0.2Ti0.8)O3-Ba0.7Ca0.3)TiO _{详细信息    查看全文}

• 作者：Guoxin Hu (1)
  Bei Xu (1)
  Xiaobin Yan (1)
  Jinjing Li (1)
  Feng Gao (1)
  Zhengtang Liu (1)
  Yong Zhang (2)
  Huajun Sun (2)
  
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2014
• 出版时间：April 2014
• 年：2014
• 卷：25
• 期：4
• 页码：1817-1827
• 全文大小：2,882 KB
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• 作者单位：Guoxin Hu (1)
  Bei Xu (1)
  Xiaobin Yan (1)
  Jinjing Li (1)
  Feng Gao (1)
  Zhengtang Liu (1)
  Yong Zhang (2)
  Huajun Sun (2)
  
  1. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, People’s Republic of China
  2. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, People’s Republic of China
  
• ISSN：1573-482X

文摘

Plate-like BaTiO3 (BT) particles were used as templates to fabricate grain-oriented Ba(Zr0.2Ti0.8)O3-Ba0.7Ca0.3)TiO3 (BZT–BCT) ceramics. The effects of the sintering temperature and the soaking time on the microstructure and electrical properties of the textured BZT–BCT ceramics were investigated. The results show that textured ceramics were obtained with orientation factor better than 0.5. The textured BZT–BCT ceramics have rhombohedral and tetragonal structures. Terrace morphology can be observed in the grains and the mechanism of grain growth is multi-nucleation multilayer growth. The TR–T and TC of BZT–BCT ceramics shift to higher temperature as the soaking time increases. Textured structures improve the dielectric, piezoelectric properties, and weaken the dielectric relaxor characteristics. When BZT–BCT ceramics sintered at 1,500?°C for 20?h, the maximum piezoelectric coefficient of 350 pC/N can be obtained.