三元运算
拉伤
材料科学
三元数制
化学
计算机科学
医学
内科学
程序设计语言
作者
Trang An Duong,Hoang Thien Khoi Nguyen,Till Frömling,Chang Won Ahn,Byeong Woo Kim,Hongliang Han,Jae‒Shin Lee
摘要
Abstract In this study, the stabilization of ergodicity and electromechanical strain properties of lead‐free ternary 0.75Na 1/2 Bi 1/2 TiO 3 –0.24SrTiO 3 –0.01ABO 3 piezoceramics (BNT–24ST, ABO 3 = BaZrO 3 (BZ), CaTiO 3 (CT), and BiFeO 3 (BF)) were investigated. The relaxor state could be stabilized in BZ‐and BF‐modified BNT–24ST ceramics even at room temperature, whereas pure BNT–24ST and CT‐modified ceramics exhibited ferroelectric (FE) behavior. These phenomena were rationalized by analyzing the temperature‐dependent permittivity; detecting the FE‐relaxor phase transition temperature ( T F‐R ); and investigating features in strain, polarization, and switching current curves. Furthermore, high‐temperature conductivity data showed that relaxor behavior and realization of large strain properties strongly correlated with the concentration of oxygen vacancies in ABO 3 ‐modified BNT–ST ternary systems.
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