Low-temperature magnetic properties of the TbPd and TbPd 3 compounds

Abstract

Field dependences of the magnetization M( H) for the TbPd and TbPd 3 compounds were measured at 4.2–70 K in magnetic fields up to 120 kOe. For both samples, no saturation is reached in the magnetic fields. At 4.2 K, the field dependence of the magnetization of TbPd is characterized by a slight hysteresis and two anomalies observed at 15 and 60 kOe, which can be related to field-induced spin-reorientation transitions. As the temperature increases, both anomalies (low- and high-field) smooth out progressively and disappear at 10 and 40 K, respectively. The temperatures of the magnetic order–disorder transition for TbPd and TbPd 3 were determined using a Belov–Arrotte proceduce as well as from measured temperature dependences of the magnetic susceptibility (for TbPd) and heat capacity (for TbPd 3); they were found to be equal to ∼50 and ∼9 K, respectively.