An approach of composition modification in (Bi,Na,Ba,Sr)(Ti,Nb,Zr)O₃ (BNSTNZ)–modified 0.65Bi_1.05FeO₃–0.35BaTiO₃ (BF35BT) piezoelectric materials was investigated. Introducing BNSTNZ into BF35BT ceramics led from the normal-ferroelectric to relaxor-ferroelectric- phase. At the optimum composition, large dynamic piezoelectric coefficient (d₃₃*) of 583 pm/V under the applied field of 5 kV/mm and relatively high static piezoelectric coefficient (d₃₃) of 135 pC/N with high maximum temperature (T_m ≤ 400 °C) were obtained. The unipolar strain and d₃₃* of BNSTNZ into BF35BT ceramics with x = 0.005 increased up to 0.251% and 718 pm/V at 90 °C. The remarkably enhanced field-induced strain response of BF35BT-based compositions is believed to be attributed to the optimum grain size, high tetragonality and the ferroelectric-relaxor phase coexistence. It is noted that this composition can be a favorable lead-free candidate for high-temperature piezoelectric applications.

研究了在（Bi，Na，Ba，Sr）（Ti，Nb，Zr）O ₃（BNSTNZ）改性的0.65Bi _1.05 FeO ₃ –0.35BaTiO ₃（BF35BT）压电材料中进行成分改性的方法。将BNSTNZ引入到BF35BT陶瓷中，从普通铁电到松弛铁电。在最佳组成下，在5 kV / mm的施加电场下，动态压电系数（d ₃₃ *）为583 pm / V，在最高温度（T _m）为较高时，静态压电系数（d ₃₃）为135 pC / N。 ≤400°C）。单极应变和d ₃₃* 在90°C下，将x = 0.005的BNSTNZ添加到BF35BT陶瓷中，可提高至0.251％和718 pm / V。据认为，基于BF35BT的组合物的场致应变响应显着增强，这归因于最佳晶粒尺寸，高四方性和铁电松弛相共存。注意，该组合物可以是用于高温压电应用的有利的无铅候选物。