抄録
We studied the thermoelectric properties of LnPdX (Ln: La, Gd, Er, X: Bi or Sb). The values of the thermoelectric power were positive and relatively large (60-220μVK−1). The values of the electrical resistivity were on the order of 10−4 Ωcm, which is relatively low in view of the large values of the Seebeck coefficient. From the Hall effect measurements, the low electrical resistivity was confirmed to be caused by the large carrier mobility. LaPdSb indicated the largest power factor of 50μWcm−1K−2 at 327 K and the highest dimensionless figure of merit of 0.26 at around room temperature. LnPdX, especially LaPdSb should attract great interest in the search for new high performance p-type thermoelectric materials.
