Specific heats, pure compounds

From band structure calculations as well as from experimental results (photoemission, specific heat...), it is now clear that, at least for magnetic compounds near the critical spacing, 5 f electrons are in bands. This means that contrary to the pure metals, the Stoner criterion may be fulfilled before the band description breaks down. 

Figure 5. A plot of ATC (= Tc+ - Tc" ) vs m2(Tc+) with data obtained from high-pressure studies on pure UPt3 (specific heat and neutron diffraction, open symbols) and data for a series of U(Pt,Pd)3 compounds with Pd concentrations up to 0.5 at% (closed symbols) figure from ref. [20].

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