Thermoelectric properties of polycrystalline palladium sulfide.

Measurement of the electrical, thermal, and structural properties of palladium sulfide (PdS) has been conducted in order to investigate its thermoelectric performance. A tetragonal structure with the space group 4/ for PdS was determined from X-ray diffraction measurement. The obtained power factor of 27 μW cm K at 800 K is the largest value obtained for the transition metal sulfides studied so far.

Pressure-induced superconductivity in palladium sulfide.

An extended study on PdS is carried out with the measurements of the resistivity, Hall coefficient, Raman scattering, and x-ray diffraction at high pressures up to 42.3 GPa. With increasing pressure, superconductivity is observed accompanying with a structural phase transition at around 19.