A series of compositionally complex fluorite oxides (CCFOs) were prepared by ball milling the mixture of ZrO₂, HfO₂, Y₂O₃, La₂O₃, and Pr₆O₁₁ followed by conventional solid-state sintering. Both XRD and TG-DSC results demonstrated that single-phase (Zr_0.2Hf_0.2Pr_0.2Y_0.2La_0.2)O_2-δ was formed at 1400°C. Elements in bulk ceramic were uniformly distributed without evident accumulation according to SEM-EDS pictures. TEM results revealed that polycrystalline ceramic powder was assignable to cubic Fm-3m fluorite structure. The electrical conductivity (σ) was measured via EIS technology and activation energy (E_a) of CCFOs was calculated in Arrhenius plots. In the temperature range of 300-750°C, CCFOs preserved the same conduction mechanism and (Zr_0.1667Hf_0.1667Pr_0.1667Y_0.25La_0.25)O_2-δ possessed higher σ and lower E_a than other high entropy fluorite oxides which is related to the incorporation of Pr element or the connection of cation-V_o complex.

通过球磨ZrO ₂、HfO ₂、Y ₂ O ₃、La ₂ O ₃和Pr ₆ O ₁₁的混合物，然后进行常规固态烧结，制备了一系列组成复杂的萤石氧化物（CCFO）。XRD 和 TG-DSC 结果均表明单相 (Zr _0.2 Hf _0.2 Pr _0.2 Y _0.2 La _0.2 )O _2-δ在 1400°C 下形成。根据SEM-EDS图片，块状陶瓷中的元素分布均匀，没有明显的积累。TEM结果表明多晶陶瓷粉末属于立方Fm-3m萤石结构。通过 EIS 技术测量电导率 ( σ )，并在阿伦尼乌斯图中计算 CCFO 的活化能 ( E _a )。在 300-750°C 的温度范围内，CCFOs 保持相同的传导机制，并且 (Zr _0.1667 Hf _0.1667 Pr _0.1667 Y _0.25 La _0.25 )O _2-δ具有更高的σ和更低的E _a与其他高熵萤石氧化物相比，这与 Pr 元素的掺入或阳离子-V _o络合物的连接有关。