Improvement in piezoelectric strain of annealed Ba(Zr0.07Ti 0.93)O3 based ceramics

• Main Authors: Parkpoom Jarupoom, Gobwute Rujijanagul
• Format: Journal
• Published: 2018
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84880387182&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/47815
• Institution: Chiang Mai University

In the present work, effects of annealing time on strain behavior, densification, and microstructure of 2 wt. % B 2 O 3 doped Ba(Zr 0.07 Ti 0.93 )O 3 ceramics were investigated. The ceramics were initially sintered at 1150 to 1275°C for 2 h. After sintering, the densest ceramics (1250°C ceramics) were selected for annealing at 1000°C for 4-16 h. An increase in strain level and piezoelectric coefficient was observed after some annealing. High bipolar strain level of 0.48% and high piezoelectric coefficients (d * 33 ) of 603 pm/V were obtained for the 8 h samples. Longer annealing times ( > 8 h) resulted in reduction of the strain level and piezoelectric value. The change in piezoelectric properties was correlated with the densification and microstructure of the studied samples. © 2013 AIP Publishing LLC.