Electrical and Magnetic Properties of Quaternary Rare Earth Thiophosphate: K4Sm2[PS4](2)[P2S6]

摘要

The quaternary alkali metal, rare earth thiophosphate phase K4Sm2[PS4](2)[P2S6] was synthesized by ceramic method and characterized by powder X-ray diffraction (XRD), SEM-EDX scanning electron microscope-microprobe analyses, electrochemical impedance and magnetic measurements. The crystal structure consists of layers of (2)infinity Sm-2[PS4](2)[P2S6](4-) separated by K+ cations. The electrical conductivity measurements indicate that the compound is a semiconductor with a resistivity of 1.0 x 10(11) Omega cm. The magnetic moment, evaluated from chi(-1) versus T at low temperature is 0.57 mu(B).