Electrical properties of Nb-DOPED Pb(Zr<inf>0.52</inf>Ti<inf>0.48</inf>)O<inf>3</inf>ceramics

• Main Authors: Piyachon Ketsuwan, Yongyut Laosiritaworn, Supon Ananta, Rattikorn Yimnirun
• Format: Journal
• Published: 2018
• Subjects: Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=66249116335&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/59955
• Institution: Chiang Mai University

The Pb(Zr0.52Ti0.48)O3ceramics with 0.75, 1.0, 1.25 and 1.50%wt of Nb2O5addition were prepared by a conventional mixed oxide technique. It was found that the average grain size of the ceramics decreased from 6 to 1 μm with increasing doping concentration to 1.5%wt. The room temperature dielectric constant and d33reached maximum values of 1050 and 285 pC/N, respectively, at 1%wt Nb-doping. The electrical coercivity (Ec) of Nb-doped PZT decreased, while the polarization values increased, with increasing doping concentration. Most importantly, this study shows that Nb2O5-doped PZT ceramics exhibits soft piezoelectric and enhanced ferroelectric behaviors, and the optimum properties can be obtained using suitable doping concentration. © 2009 World Scientific Publishing Company.