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The heat capacity in the applied magnetic field tip to 9 T, susceptibility and magnetization of polycrystalline CeCu4Ga are presented. Magnetic ordering was not observed down to 2 K. For temperature T < 200 K a Curie Weiss behavior is observable giving an effective magnetic moment mu(eff) = 2.53 mu(B)/f.u. The experimental value of mu(eff) is close to the calculated one for a free Ce3+ ion (mu(eff) = 2.54 mu(B)/f.u.), thus indicating the presence of well localized magnetic moments carried by the stable Ce3+ ions. At low temperatures the electronic heat capacity coefficient value depends strongly on the temperature range used for the extrapolation and applied magnetic field. We. observe a typical heavy fermion behavior with gamma value of about 380 mJ mol(-1) K-2 obtained from extrapolation to T = 0 K of the temperature range above 7 K. However, extrapolation of the lowest temperatures range yields the gamma value of 3.3 J mol(-1) K-2.

Heat Capacity of Heavy Fermion Compound CeCu4Ga in High Magnetic Fields

Heat Capacity of Heavy Fermion Compound CeCu₄Ga in High Magnetic Fields