固相反应法快速制备FeSb2及其电学性质研究

Electrical Properties of FeSb2 Fast Prepared by Solid-state Reaction

采用高温固相反应法,在773~923K的温度范围内考察了FeSb2的生成规律。制备出的样品进行了XRD和SEM分析,并对样品的电阻率和Seebeck系数进行了测试分析,结果表明:在温度883K保温3h的制备条件下,可以合成单相的多晶体化合物FeSb2。制备出的样品内部存在不均匀的微米级孔洞。样品在测试温度为511.63K时获得最大的Seebeck系数36.34μV/k,在453.72K时获得最大功率因子188.68μW/(m·K^2)。

The polycrystalline compound of FeSb2 was prepared by solid-state reaction at high temperature,the prepared temperature was investigated in the temperature range of 773-923 K. The samples were analyzed by XRD and SEM. The resistivity and Sebeck coefficient of the samples were measured and analyzed. The results show that the single-phase polycrystalline compound FeSb2 can be synthesized at 883 K for 3 h. There are many micron-sized pores evenly inside the sample. The maximum Seebeck coefficient 36.34 μV/k is obtained at 511.63 K,and the maximum power factor 188.68 μW/(m·K^2) is obtained at 453.72 K.