$\mathrm{B}{\mathrm{i}}_{0.5}\mathrm{N}{\mathrm{a}}_{0.5}\mathrm{Ti}{\mathrm{O}}_3$ (BNT)-based systems are potential candidates for actuators due to their outstanding strain performances. Despite various doping components having been utilized to regulate their strain performances, the systematical route for designing giant-strain BNT-based materials remains elusive. Herein, we decode the potential correlation between strain performances and phase boundary characteristics and then propose a complete guideline for designing BNT-based materials with the giant strain. Since the polarization rotation is closely correlated to the phase transition process, the morphology phase boundary (MPB) frame of initial BNT matrix can maintain its partial properties for the polarization rotation, when introducing bits of doping components to tailor the transition temperature. The screened K6LT matrix with the optimized MPB frame exhibits a $d_{33}$ of 260 pC/N, and the ($\mathrm{Z}{\mathrm{r}}_{0.5}\mathrm{N}{\mathrm{b}}_{0.5}$)-modified K6LT matrix (K6LT-ZN1) exhibits a low driving field $E_{\mathrm{pol}}\sim 38.4$ kV/cm and high large-signal piezoelectric coefficient $d{{}_{33@60}^{*}}_{}\sim 727$ pm/V. This proposed design guideline reveals the significance for BNT matrix screening and could be a feasible method for constructing BNT-based systems with excellent strain performances.

中文翻译：

---

了解基于 BNT 的系统的应变性能和相界特性之间的潜在相关性

$\mathrm{乙}{\mathrm{我}}_{0.5}\mathrm{氮}{\mathrm{A}}_{0.5}钛{\mathrm{氧}}_3$基于 (BNT) 的系统因其出色的应变性能而成为执行器的潜在候选者。尽管使用了各种掺杂成分来调节其应变性能，但设计基于 BNT 的巨应变材料的系统路线仍然难以捉摸。在此，我们解码了应变性能和相界特性之间的潜在相关性，然后提出了设计具有巨应变的 BNT 基材料的完整指南。由于偏振旋转与相变过程密切相关，因此当引入少量掺杂成分来调整转变温度时，初始BNT基体的形态相边界（MPB）框架可以保持其偏振旋转的部分特性。带有优化 MPB 框架的屏蔽 K6LT 矩阵表现出$d_{33}$260 pC/N，并且（$\mathrm{Z}{\mathrm{r}}_{0.5}\mathrm{氮}{\mathrm{乙}}_{0.5}$)-改进的 K6LT 矩阵 (K6LT-ZN1) 表现出低驱动场${乙}_{\mathrm{波尔}}～38.4$kV/cm和高大信号压电系数$d{{}_{33@60}^{*}}_{}～\mathrm{第727章}$下午/V。该设计指南揭示了 BNT 基质筛选的重要性，并且可能是构建具有优异应变性能的基于 BNT 的系统的可行方法。