Fe-Si-Ge基合金的电学特性  

The transport properties of Fe-Si-Ge alloys

作　　者：李伟文[1] 赵新兵[1] 邬震泰[1] 曹高劭[1] 

机构地区：[1]浙江大学材料科学与工程系硅材料国家重点实验室,浙江杭州310027

出　　处：《功能材料》2003年第5期546-547,552,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(59971044)

摘　　要：　含Ge的P型FeSi2基热电材料的电阻率有较大的下降,但仍保持较高的热电动势率,其功率因子有很大的提高。但对于N型FeSi2基热电材料,Ge的引入使样品向P型转变,并引起电学性能变差。可见,Ge的引入可提高P型FeSi2基热电材料的电学性能,Fe0.91Cr0.09Si1.6Ge0.4的功率因子达到β FeSi2的10倍左右。Ptype FeSi2 alloys doped with germanium have low electrical resitivities while keeping relative high Seebeck confficient, so they have large power factor. But for the ntype FeSi2 alloys, it was observed that they convert into ptype when doping germanium. As a result, doping of germanium in ptype FeSi2 alloys can improve the transport properties. The power factor of Fe0.91Cr0.09Si1.6Ge0.4 was 10 times as high as βFeSi2

关 键 词：Fe-Si-Ge基合金 热电材料 电学性能 功率因子 电阻率 热电动势率 

分 类 号：TN37[电子电信—物理电子学]