Magnetic properties of filled skutterudite EuFe4As12 under pressure

Abstract

We have investigated the effect of pressure on magnetic ordering of EuFe4As12 by measuring magnetization. The magnetization under pressure is measured by incorporating ceramic opposed anvil pressure cell into MPMS. The ferromagnetic-like ordering temperature TC, which is 152 K at ambient pressure, increases by applying pressure. The increase rate of TC against pressure (dTC/dP) is almost the same value at each field i.e., 5.5 K/GPa for H =0.1 T and 5.2 K/GPa for H =1T. The dTC/dP is almost constant up to 4 GPa, the maximum pressure of this study. On the other hand, the value of magnetization at ordering phase monotonically decreases with increasing pressure.