Magnetic and Transport Properties of Filled Skutterudite SmOs₄P₁₂under Pressure

Abstract

Filled skutterudite SmOs 4 P 12 is reported as a Kondo lattice compound with antiferromagnetic order at T N ∼ 4.5 K. We have measured the electrical resistivity and the magnetization under pressure up to 1.4 GPa on SmOs 4 P 12 . We revealed the increase of T N by applying pressure at a rate of ∼ 0.4 K/GPa. This ratio is consistent with the value of 0.5 K/ GPa predicted by thermal expansion and specific heat measurements.