热压快速凝固Fe_(0.92)Mn_(0.08)Six半导体的热电性能  

Transport Properties of Fe_(0.92)Mn(0.08)Six Semiconductor Prepared by Rapid Solidification and Hot Pressing

作　　者：芦玉峰[1] 赵新兵[1] 倪华良[1] 陈海燕[1] 邬震泰[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《稀有金属材料与工程》2004年第9期980-983,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(59971004)

摘　　要：采用快速凝固和热压的方法制备了p型热电材料Fe0.92Mn0.08Six(x=1.9,2.0,2.1,2.3,2.5)。X射线衍射分析表明,热压试样退火24h后,完全转变为半导体相。所有试样的致密度均高于90%。测量试样的电学性能发现,原料配比为Fe0.92Mn0.08Si2.1的试样在整个测量温度范围内的功率因子最大,550℃时达到了400Wm-1K-1以上。P-type Fe0.92Mn0.08Six(x=1.9, 2.0, 2.1, 2.3, 2.5) alloys were prepared by rapid solidification and hot pressing. XRD analysis revealed that for all samples the phases were converted into a single beta phase after being annealed for 24 h at 800 degreesC. The density of all the samples is over 90%. The experimental results showed that Fe0.92Mn0.08Si2.1 had the highest power factor over the whole measured temperature range greater than 400 muW(.)m(-1.)K(-1) at 550degreesC.

关 键 词：快速凝固 试样 热压 退火 致密度 功率因子 X射线衍射分析 半导体 热电性能 热电材料 

分 类 号：TN304[电子电信—物理电子学]