【摘要】 采用惰性气体蒸发和原位真空压结法制备了具有清洁界面的纳米PbF2块材．通过X射线衍射、差热分析和复平面阻抗谱方法，研究了相结构、相变和离子电导率．结果表明，纳米PbF2比粗晶PbF2的离子电导率大幅提高，相变温度降低了30℃.更多还原

【Abstract】 The bulk samples of nanophase PbF2(n-PbF2) with the clean interfaces were prepared by using an inert gas evaporation and in situ compacting technique. The phase constitution and ionic conductivity were studied by XRD, DSC and complex impedance spectra. The results show that the ionic conductivity of n-PbF2 is rather higher than that of coarse-grained PbF2. The temperature of phase transition from α-phase toβ-phase for n-PbF2 drops about 30℃ compared with that of coaxse-grained PbF2.更多还原