A study of spin-wave excitations in dilute Pd-Fe alloys

The temperature dependence of the heat capacity in magnetic fields up to 16 kOe and the magnetization in magnetic fields up to 40 kOe have been determined for a number of palladium-iron alloys containing up to 2 at.% iron. An adequate description of the magnetization behaviour for all of the alloys and the heat capacity of alloys containing more than 1 at.% Fe can be given in terms of spin-wave excitations having an energy given by D q 2 , where D is field-dependent