Dynamic Probe of Superionic Transition in Fluorite Structured Compounds

Open AccessRenewablesRESEARCH ARTICLES15 May 2024Dynamic probe of superionic transition in fluorite structured compounds Chen Ling and Chuhong Wang Chen Ling and Chuhong Wang https://doi.org/10.31635/renewables.024.202400054 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Superionic transition is an extraordinary phenomenon that a compound attains high ionic conductivity through anomalous disordering of mobile-ion sublattice. Comprehending superionic transition offers notable prospects for the advancement of superionic conductors for diverse applications. However, the investigation of superionic transition is impeded by its intricate and stochastic characteristics, coupled with the absence of adequate methods for characterizing, quantifying, and analyzing its microscopic properties. Here we show that the superionic transition can be discerned through the dynamic signatures of disordering events underlying the increase in ionic conductivity. The adoption of a dynamic perspective as opposed to the conventional treatment of equilibrium properties brings significant advantage to scrutinize the microscopic characteristics of superionic transition. Our results show the superionic transition in the prototypical family of fluorite compounds is characterized by the scale-invariant disordering dynamics independent of temperature or extent of disorder. The observation of scale-invariance in the absence of external tuning implies that the superionic conduction is self-tuned to criticality by intrinsic dynamics. The connection between ionic diffusion and self-organized criticality provides a novel platform for understanding, analyzing, and manipulating superionic transition towards better superionic conductors. Download figure Download PowerPoint Next article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2024 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...