Limited ferromagnetism and other magnetic properties of Pd-Mn alloys

Solid solutions of Mn in Pd have been studied by magnetization, paramagnetic resonance and electrical resistivity measurements and have been found to yield ferromagnetism only for solute concentrations below 5% and temperatures below 8K. At higher concentrations a susceptibility maximum and other effects characteristic of spin glass ordering appear, and in the transition region there is evidence for a large amount of freezing of spin entropy of a less well defined character. This behaviour is discussed in terms of the roles of solute-solvent interactions and solute-solute interactions for close and distant neighbours.