Diffuse Phase Transitions and Giant Electrostrictive Coefficients in Lead-Free Fe3+-Doped 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 Ferroelectric Ceramics

• DOI: 10.1021/acsami.6b08879
• Publication Date: 2016-10-24T13:56:58Z
• Authors: Li Jin; Renjie Huo; Runping Guo; Fei Li; Dawei Wang; Ye Tian; Qingyuan Hu; Xiaoyong Wei; Zhanbing He; Yan Yan; Gang Liu
• Keywords: Electrostriction; Hysteresis

The electrostrictive effect has some advantages over the piezoelectric effect, including temperature stability and hysteresis-free character. In present work, we report diffuse phase transitions properties in lead-free Fe3+-doped 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BZT-0.5BCT) ferroelectric ceramics. doping concentration was set from 0.25 to 2 mol %. It is found that by introducing Fe3+ ion into BZT-0.5BCT, corresponding permittivity maximum Tm shifted toward lower monotonically 37 °C per % ion. Simultaneously, gradually changed classical ferroelectric-to-paraelectric with a weak relaxor characteristic. Purely responses giant coefficient Q33 between 0.04 0.05 m4/C2 are observed 25 100 for compositions doped 1-2 of BZT-0.5BCT ceramics almost twice other These observations suggest system can be considered as potential material applications area BT-based would have systems.