论文标题
无铅的Li $ _ {x} $ na $ _ {1-x} $ nbo $ _ {3} $ system的三个共存铁电阶段的明确证据
Unambiguous evidence of three coexisting ferroelectric phases in a lead-free Li$_{x}$Na$_{1-x}$NbO$_{3}$ system
论文作者
论文摘要
We report here the presence of three coexisting ferroelectric phases in a lead-free lithium sodium niobate (Li$_{x}$Na$_{1-x}$NbO$_{3}$; LNNx) system stable for $0.15 \leq x \leq 0.80$, which contrasts the review report of Dixon and Lightfoot [Phys.修订版B $ \ textbf {97} $，224105（2018）]。更重要的是，由于其高介电介电常数，低损耗和高铁电反应，我们已经将LNN20确定为技术应用的重要组成。 LNN20中的异常介电和铁电反应已归因于形态相边界，就像该组成周围的自然一样。
We report here the presence of three coexisting ferroelectric phases in a lead-free lithium sodium niobate (Li$_{x}$Na$_{1-x}$NbO$_{3}$; LNNx) system stable for $0.15 \leq x \leq 0.80$, which contrasts the review report of Dixon and Lightfoot [Phys. Rev. B $\textbf{97}$, 224105 (2018)]. More importantly, we have identified LNN20 as an important composition for technological applications due to its high dielectric permittivity, low loss, and high ferroelectric response. The anomalous dielectric and ferroelectric responses in LNN20 have been attributed to the morphotropic phase boundary like nature around this composition.
