Abstract
CePd2Al2 single crystal was investigated by means of magnetization, specific heat and electrical resistivity measurements including the resistivity measurement under hydrostatic pressure. The antiferromagnetic phase transition with Neel temperature of 2.7 K was confirmed by all types of measurements as well as the first order structural phase transition from tetragonal to orthorhombic structure around 13 K.
The long-range magnetic order with magnetization easy basal-plane was found. The thorough analysis of magnetization and specific heat was done to discuss the results in context of previous inelastic neutron scattering experiment and the crystal-field scheme.
The electrical resistivity under hydrostatic pressure revealed a shift of the structural transition to the higher temperatures, while the magnetic transition temperature remains constant. The resistivity behavior at the structural transition indicates a change of the low-temperature crystal structure in pressures above 0.6 GPa. (C) 2015 Elsevier B.V.
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