The magnetism of PrPd2Ga3

The mean-field approach and crystal-field theory were employed in this work to study the magnetism of PrPd2Ga3. We have derived several expressions for the magnetization induced by an external magnetic field and have determined the condition for occurrence of spontaneous magnetic ordering. Our theoretical analyses explain well why the system is paramagnetic in absence of a magnetic field and suggest that the system is always magnetically ordered if an external field is applied in the ab-plane, but remains paramagnetic for the magnetic field applied along c-direction.