Abstract
The analysis of magnetization and neutron-scattering measurements shows that the ferromagnetic cloud in dilute PdCo alloys has a size of 7.92μB, with a Co moment of 2.02μB, for a range of concentrations of 0.3≤c≤2.0 at. % Co. Using the values obtained by our analysis of the data, the neutron scattering and the critical temperatures of ferromagnetism are reproduced using a localized magnetic moment model with a Heisenberg type of interaction between clouds and Monte Carlo simulation methods. The calculated neutron scattering shows a strong component of critical scattering in the unpolarized neutron; this component is the cause of the larger value of the ferromagnetic cloud (∼10μB) that can be inferred from the neutron scattering. Agreement is also found between calculated critical temperatures and experimental Tc’s at these values of concentrations.
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