Magnetic-field dependence of the specific heat of Ce2CuIn3

We report specific heat measurements, in magnetic fields up to 9 T, on the Ce2CuIn3 alloy, which exhibits spin-glass (SG) features below Tf=2.1 K. At zero magnetic field, an anomaly associated to the SG transition appears around 1.3Tf. This anomaly broadens and shifts to higher temperatures when increasing the magnetic field. The magnetic entropy has the value of 0.3Rln2 at Tf, and increases close to about Rln6 at T=300 K. The maximum value for the magnetocaloric effect is obtained at 4.4 K, where the isothermal magnetic entropy reaches a value of -ΔSmag=5 J/molK at the maximum experimentally available field of 9 T. We compare our results to those reported for other SG systems