Faculty of Science (FNWI) - Institute of Physics (IoP) - Van der Waals-Zeeman Institute (WZI)
Abstract
The antiferromagnetic body-centred tetragonal compound GdNi2Ge2 orders at 28 K. Successive magnetic phase transitions are observed by specific-heat and magnetisation measurements as a function of temperature in different applied magnetic fields. Plots of M2 vs. B/M (Arrott-plots) show various anomalies. On the basis of the experimental results, a magnetic phase diagram is constructed. The multiple magnetic phase transitions are discussed in terms of competing ordering modes in the Gd sublattice.