快速凝固β-FeSi_2半导体的热电性能  

Transport properties of p-type β-FeSi_2 semiconductor prepared by rapid solidification

作　　者：朱铁军[1] 赵新兵[1] 胡淑红[1] 邬震泰[1] 周邦昌[1] 

机构地区：[1]浙江大学材料系硅材料国家重点实验室,浙江杭州310027

出　　处：《功能材料》2001年第3期280-281,共2页Journal of Functional Materials

基　　金：国家自然科学基金(59771032);教育部博士点基金(97033518)资助项目

摘　　要：研究了由快速凝固粉烧结制备的ｐ型 Ｆｅ０．９２５Ｍｎ０．０７５Ｓｉ２－０．１７％（质量分数）Ｃｕ样品的热电性能随温度的变化。Ｘ射线衍射分析表明，快速凝固粉由α相和ε相组成。烧结样品８００℃退火 ２１ｈ后，完全转变为β半导体相。烧结时间对β－Ｆｅ－Ｓｉ２合金的热电性能有较大的影响，烧结时间地长．Ｓｅｅｂｅｃｋ系数和电阻率越小。P-type Fe0.925Mn0.075Si2-0. 17wt. % Cu alloys were prepared by rapid solidification technique and sintering. Temperature dependences of transport properties of samples were investigated. XRD analysis revealed that rapidly solidified powders were composed of a and e. phase and converted completely into single β phase after sintered at 1373K and annealed for 21h at 1073K. Sintering time had great effects on transport properties. The longer sintering time, the less Seebeck coefficient and electrical resistivity.

关 键 词：Β-FESI2 热电材料 热电性能 

分 类 号：TN304[电子电信—物理电子学] TN37