Electrical transport and thermoelectric properties of AgPb10SbTe12 prepared by high pressure method

Thermoelectric material, Ag\(_1-\textit{x}\) Pb\(_{\textit{m}}\) SbTe \(_{\textit{m}+2}\) (x = 0·2, m = 10), have been successfully prepared by high pressure method. The pressure-dependent electrical transport and thermoelectric properties of Ag0 ·8 Pb10 SbTe12 were studied at room temperature. Electrical resistivity and Seebeck coefficient decreases with an increase of synthetic pressure. Thermal conductivities are nearly constant when the pressure is lower than 4 GPa. The carrier concentrations of Ag0 ·8 Pb10 SbTe12 were tuned by more than a factor of 100 through changing of synthetic pressure. These results indicate that high pressure technique provides a viable and controllable way of tuning the electrical transport properties for AgPb\(_{\textit{m}}\) SbTe\(_{\textit{m} + 2}\).