Multiphase coexistence and enhanced electrical properties in (1-x-y) BaTiO3-xCaTiO3-yBaZrO3 lead-free ceramics

作者：Huang, Yanli; Zhao, Chunlin; Lv, Xiang; Wang, Hui; Wu, Jiagang^*

来源：Ceramics International, 2017, 43(16): 13516-13523.

DOI：10.1016/j.ceramint.2017.07.057

• BaTiO3
• Ternary system
• Multiphase coexistence
• Electrical properties

In this work, the multiphase coexistence of rhombohedral-orthorhombic and orthorhombic-tetragonal (R-0/0T) was constructed in (1-x-y)BaTiO3-xCaTiO(3)-yBaZrO(3) ceramics with 0.14 <= x <= 0.16 and 0.10 <= y <= 0.12, and thus a large piezoelectric constant (d(33)) of 600 pC/N was attained in the ternary (1-x-y)BaTiO3-xCaTiO3yBaZr03 ceramics using the optimization of x and y. The R-O/O-T multiphase coexistence as well as the enhancement of dielectric and ferroelectric properties can be responsible for the high d(33) of this work. In addition, a high strain of 0.15% was observed in the multiphase coexistence. As a result, electrical properties of BaTiO3 can be optimized by the construction of multiphase coexistence through the co-doping of CaTiO3 and BaZrO3.

• 出版日期2017-11
• 单位四川大学