标题： 高性能热电材料AgPbmSbTem+2中的纳米尺度团簇 显示英文标题

标题： Nanoscale clusters in the high performance thermoelectric AgPbmSbTem+2

摘要： 研究了银基热电材料AgPbmSbTem+2系列的局域结构，采用原子对分布函数（PDF）方法。使用单相或双相建模方法尝试了三种候选模型来描述这类材料的结构。结合PDF建模与HRTEM数据分析表明，AgPbmSbTem+2中含有成分接近AgPb3SbTe5的纳米级嵌入相，随机分散在PbTe基质中。 显示英文摘要

摘要： The local structure of the AgPbmSbTem+2 series of thermoelectric materials has been studied using the atomic pair distribution function (PDF) method. Three candidate-models were attempted for the structure of this class of materials using either a one-phase or a two-phase modeling procedure. Combining modeling the PDF with HRTEM data we show that AgPbmSbTem+2 contains nanoscale inclusions with composition close to AgPb3SbTe5 randomly embedded in a PbTe matrix.