The temperature dependences of the ionic electrical conductivity of fluorite-type (sp. gr. F m 3 ‾ m $Fm\overline{3}m$ , Z = 8) KDy3F10 and KHo3F10 single crystals grown by the Bridgman technique have been studied by impedance spectroscopy for the first time. The correlation between the conductometric and structural characteristics of KR 3F10 (R = Tb, Dy, Ho, Y) crystal family from the point of view of the observed size effect in the ionic conductivity is discussed. With decrease in the unit-cell volume V 1F per fluorine atom in a series of crystals with R = Tb, Dy, Ho and Y, the activation energy Eσ of ion transfer decreases from 1.57 to 1.16 eV respectively and the fluorine-ion conductivity value increases from 3.0 × 10−5 to 4.4 × 10−4 S cm at 773 K, i.e. the nature of the conductivity change is linearly antibatic. This phenomenon can be useful for developing approaches and search strategies for new ionic conductors.

中文翻译：

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熔体生长的KR 3F10 (R = Tb, Dy, Ho, Y)单晶的离子电导率与结构特性的关系

萤石型离子电导率的温度依赖性（sp. gr. F 米 3 ‾ 米 $Fm\overline{3}m$ ,Z= 8) KDy3F10和 KHo3F10Bridgman 技术生长的单晶首次通过阻抗谱进行了研究。K的电导和结构特征之间的相关性R 3F10(R= Tb, Dy, Ho, Y) 晶体族从观察到的离子电导率尺寸效应的角度进行了讨论。随着单胞体积的减小五 1F一系列晶体中的每个氟原子R= Tb、Dy、Ho 和 Y，活化能乙离子转移的 σ 分别从 1.57 降低到 1.16 eV，氟离子电导率值从 3.0 × 10 增加-5至 4.4 × 10-4S cm 在 773 K，即电导率变化的性质是线性抗腐蚀的。这种现象可用于开发新离子导体的方法和搜索策略。