Abstract
The susceptibility maximum and near-metamagnetic behaviours observed commonly in heavy-fermion compounds can be explained by the Fermi-liquid model in terms of the logarithmic temperature ( T) and magnetization ( M) dependence of the free energy. It is shown that, in prototype substances, the variation of susceptibility follows precisely a T 2 ln T law and two scaling laws in accordance with theoretical predictions. Near-metamagnetic behaviours can be attributed to a steep peak in the ∂M/∂H versus M curves arising also from a logarithmic term.
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