The construction of superparaelectric (SPE) systems has been demonstrated to be an essential means of enhancing energy storage properties, while the underlying physical behavior is still unclear. Here, the structure evolution of SPE was investigated on (1-$x$)($0.85{\mathrm{NaNbO}}_3-0.15{\mathrm{Sr}}_{0.7}{\mathrm{Bi}}_{0.2}{\mathrm{TiO}}_3$)-$x\mathrm{Bi}\left({\mathrm{Mg}}_{0.5}{\mathrm{Zr}}_{0.5}\right){\mathrm{O}}_3$ (NN-SBT-BMZ) ceramics by analyzing the lattice structure and electronic transitions behavior under the regulation of chemical content and temperature. The cell volume and optical band gap has been enhanced significantly, with increasing the doping contents. Moreover, the detailed phase diagram of NN-SBT-BMZ with a temperature content was derived by combining the evolution of dielectric, optical transitions, lattice structure, and phonon behavior under thermodynamic field, in which the evolution of the lattice structure is closely related to the domain structure. Noteworthy, the oscillatory processes of the main phonons near the $T_B$ temperature clearly reflect the relaxation state of the lattice structure, which is caused by the fact that the static displacements of the atoms in the crystal with respect to their equilibrium positions do not occur simultaneously. This work describes the comprehensive study of structural properties on ${\mathrm{NaNbO}}_3$-based SPE ceramics, which display positive implications for the development of energy storage capacitors.

中文翻译：

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超高储能NaNbO3基超顺电弛豫铁电陶瓷相图及结构演化机制

超顺电（SPE）系统的构建已被证明是增强能量存储性能的重要手段，但其潜在的物理行为仍不清楚。在这里，我们研究了 SPE 的结构演变（1-$X$)($0.85{\mathrm{铌酸二钠}}_3-0.15{锶}_{0.7}{双}_{0.2}{\mathrm{二氧化钛}}_3$)-$X双（{镁}_{0.5}{锆}_{0.5}）{\mathrm{氧}}_3$（NN-SBT-BMZ）陶瓷，通过分析化学含量和温度调节下的晶格结构和电子跃迁行为。随着掺杂含量的增加，晶胞体积和光学带隙显着增大。此外，结合热力学场下介电、光学跃迁、晶格结构和声子行为的演化，推导出具有温度含量的NN-SBT-BMZ的详细相图，其中晶格结构的演化与热力学场下的热力学场密切相关。域结构。值得注意的是，主声子附近的振荡过程${\mathrm{时间}}_{乙}$温度清楚地反映了晶格结构的弛豫状态，这是由于晶体中原子相对于其平衡位置的静态位移不同时发生而引起的。这项工作描述了结构特性的综合研究${\mathrm{铌酸二钠}}_3$基于SPE陶瓷，这对储能电容器的发展具有积极意义。