Abstract: Bismuth sodium titanate Bi05Na05TiO3 ceramic with about 96% of theoretical density was prepared by sol-gel processing. The saturate P-E hysteresis loop can be obtained under a 100kV/cm AC electric field for the sol-gel processed Bi05Na05TiO3 ceramic and the remanent polarization Pr and coercive field Ec are 32μC/cm2 and 61kV/cm respectively. Moreover, from the piezoelectric measurements, this material fabricated by sol-gel processing was found to have increased piezoelectric constant d33=102×10-12C/N and electromechanical coupling factor kt=58%. Therefore, sol-gel method is a potential fabrication technique for this lead-free piezoelectric ceramic.

Keywords: 
• sol-gel method /
• Na05Bi05TiO3 nano-powders /
• remanent polarization /
• piezoelectric constant /
• electromechanical coupling factor