Pressure effect on the antiferromagnetic temperature of CePdSb3

Abstract CePdSb 3 crystallizes complex orthorhombic structure that has two Wyckoff positions of Ce. The recent studies on the single crystal CePdSb 3 revealed an antiferromagnetic ordering at T N =3.1 K. We have measured the temperature dependence of the electrical resistivity up to 4.1 GPa and, down to 60 mK. With applying pressure, another anomaly in ρ ( T ) curve appeared at the temperature lower than T N appeared above 1.0 GPa, suggesting the existence at second magnetic ordering caused by the complex structure that has two Ce sites.