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Electric field-induced transformations in bismuth sodium titanate-based materials
Progress in Materials Science ( IF 33.6 ) Pub Date : 2021-06-24 , DOI: 10.1016/j.pmatsci.2021.100837
Giuseppe Viola , Ye Tian , Chuying Yu , Yongqiang Tan , Vladimir Koval , Xiaoyong Wei , Kwang-Leong Choy , Haixue Yan

Electric field-induced transformations occur in a myriad of systems with a variegated phenomenology and have attracted widespread scientific interest due to their importance in many applications. The present review focuses on the electric field-induced transformations occurring in bismuth sodium titanate (BNT)-based materials, which are considered an important family of lead-free perovskites and represent possible alternatives to lead-based compounds for several applications. BNT-based systems are generally classified as relaxor ferroelectrics and are characterized by complex structures undergoing various electric field-driven phenomena. In this review, changes in crystal structure symmetry, domain configuration and macroscopic properties are discussed in relation to composition, temperature and electrical loading characteristics, including amplitude, frequency and DC biases. The coupling mechanisms between octahedral tilting with polarization and strain, and other microstructural features are identified as important factors mediating the local and overall electric field-induced response. The role of field-induced transformations on electrical fatigue is discussed by highlighting the effects of ergodicity on domain evolution and fatigue resistance in bipolar and unipolar cycles. The relevance of field-induced transformations in key applications, including energy storage capacitors, actuators, electrocaloric systems and photoluminescent devices is comprehensively discussed to identify materials design criteria. The review is concluded with an outlook for future research.



中文翻译:

钛酸铋钠基材料的电场诱导转变

电场引起的变换发生在具有多样化现象学的无数系统中,并且由于它们在许多应用中的重要性而引起了广泛的科学兴趣。本综述重点关注钛酸铋钠 (BNT) 基材料中发生的电场诱导转变,这些材料被认为是重要的无铅钙钛矿家族,代表了多种应用中铅基化合物的可能替代品。基于 BNT 的系统通常被归类为弛豫铁电体,其特征是复杂的结构会经历各种电场驱动现象。在这篇综述中,讨论了与成分、温度和电负载特性相关的晶体结构对称性、域配置和宏观特性的变化,包括幅度、频率和直流偏置。八面体倾斜与极化和应变以及其他微观结构特征之间的耦合机制被确定为介导局部和整体电场诱导响应的重要因素。通过强调遍历性对双极和单极循环中域演化和疲劳抗力的影响,讨论了场致转换对电疲劳的作用。全面讨论了场致转换在关键应用中的相关性,包括储能电容器、执行器、电热系统和光致发光器件,以确定材料设计标准。回顾总结了对未来研究的展望。八面体倾斜与极化和应变以及其他微观结构特征之间的耦合机制被确定为介导局部和整体电场诱导响应的重要因素。通过强调遍历性对双极和单极循环中域演化和疲劳抗力的影响,讨论了场致转换对电疲劳的作用。全面讨论了场致转换在关键应用中的相关性,包括储能电容器、执行器、电热系统和光致发光器件,以确定材料设计标准。回顾总结了对未来研究的展望。八面体倾斜与极化和应变以及其他微观结构特征之间的耦合机制被确定为介导局部和整体电场诱导响应的重要因素。通过强调遍历性对双极和单极循环中域演化和疲劳抗力的影响,讨论了场致转换对电疲劳的作用。全面讨论了场致转换在关键应用中的相关性,包括储能电容器、执行器、电热系统和光致发光器件,以确定材料设计标准。回顾总结了对未来研究的展望。通过强调遍历性对双极和单极循环中域演化和疲劳抗力的影响,讨论了场致转换对电疲劳的作用。全面讨论了场致转换在关键应用中的相关性,包括储能电容器、执行器、电热系统和光致发光器件,以确定材料设计标准。回顾总结了对未来研究的展望。通过强调遍历性对双极和单极循环中域演化和疲劳抗力的影响,讨论了场致转换对电疲劳的作用。全面讨论了场致转换在关键应用中的相关性,包括储能电容器、执行器、电热系统和光致发光器件,以确定材料设计标准。回顾总结了对未来研究的展望。全面讨论了电热系统和光致发光器件,以确定材料设计标准。回顾总结了对未来研究的展望。全面讨论了电热系统和光致发光器件,以确定材料设计标准。回顾总结了对未来研究的展望。

更新日期:2021-08-27
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