纳米PbF_2的制备、物相组成和离子导电性  

Preparation, Phase Constitution and Ionic Conductivity of Nanophase PbF_2

作　　者：刘金芳[1] 吴希俊[1] 许国良[1] 王评初[2] 

机构地区：[1]浙江大学材料科学与工程系,杭州310027 [2]中国科学院上海硅酸盐研究所,上海200050

出　　处：《无机材料学报》2000年第3期447-450,共4页Journal of Inorganic Materials

基　　金：国家自然科学基金!59872031;教育部博士学科点基金!9433510;浙江大学华为教育发展基金

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℃.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.

关 键 词：相变 离子导电率 二氟化铝 纳米材料 

分 类 号：O614.433[理学—无机化学] TM242.051[理学—化学]