Abstract
Various magnetic properties observed in Y-M (M=Mn, Fe, Co, and Ni) and Y 2M 14B (MFe and Co) intermetallic compounds are reviewed from a viewpoint of the itinerant electron model. The characteristics of the electronic density of states calculated for these compounds are summarised. It is shown that the general trend of the magnetism of these compounds can be explained in terms of the calculated results of the density of states. The calculated values of the low-temperature specific heat coefficient and the local magnetic moments show good agreement with the experimental ones, which confirms the validity of the explanation of their magnetism in terms of the itinerant electron model. Explanations are given for the large magnetovolume effect in Fe-rich YFe compounds, the metamagnetism of Y 2Ni 16, the thermal spontaneous ferromagnetism of Y 2Ni 7 and the weak ferromagnetism of Y 9Co 7.
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