Magnetism and weak electronic correlations in Ce₂PdGa₁₂.

Single crystals of Ce2PdGa12 were studied by means of specific heat and electrical transport measurements, performed in wide ranges of temperature and magnetic field strength. The results corroborate the antiferromagnetic ordering reported in the literature, yet seem to exclude the heavy-fermion nature of the compound that has been previously suggested. The derived magnetic phase diagram involves a tricritical point that separates the phase boundaries of second- and first-order character. The transition from the antiferromagnetic state to a magnetic field-induced paramagnetic state realized in strong fields seems to be governed by a spin-flip mechanism without involving any intermediate magnetic phases.