Yb掺杂(Ba,Sr)TiO_3系PTCR材料的研究Ⅰ.表面受主态密度的计算

Investigation on Yb-Doped (Ba,Sr)TiO_3 PTCR Materials Ⅰ. Calculation on Acceptor State Density

在Ｈｅｙｗａｎｇ 模型的基础上，采用了一种计算ＰＴＣＲ材料表面受主态密度的新方法。通过ｌｎ ρ－ １／ εａｐｐ Ｔ 曲线可以算得材料的表面受主态密度。具体计算了Ｙｂ 掺杂（ Ｂａ ，Ｓｒ）ＴｉＯ３材料的表面受主态密度。

The acceptor state density was calculated by a new method based on Heywang Model.By using the slope of natural logarithm of of resistivity with respect of 1/ε app T, the acceptor state density of Yb-doped BaTiO 3 was calculated.