文摘
Starting from elemental powder mixtures of Fe x In4?em class="a-plus-plus">x Se3 (x?=?0, 0.05, 0.1, 0.15), polycrystalline In4Se3-based compounds with homogeneous microstructures were prepared by mechanical alloying (MA) and hot pressing (HP). With the increase of x from 0 to 0.15, the electrical resistivity and the absolute value of the Seebeck coefficient increased, while the thermal conductivity first decreased and then increased. The maximal dimensionless figure of merit ZT of 0.44 was obtained for the Fe x In4?em class="a-plus-plus">x Se3 (x?=?0.05) sample at 723?K.