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Magnetism and magnetocaloric effect in RE AgAl ( RE = Er and Ho) intermetallic compounds have been studied. Both compounds undergo a second order magnetic phase transition from paramagnetic to ferromagnetic state. A large reversible magnetocaloric effect was observed around its own Curie temperatures T C ∼ 14 and 18 K for ErAgAl and HoAgAl, respectively. For a field change of 0–7 T, the maximum magnetic entropy change reaches 13.7 and 13.8 J/kg K for RE = Er and Ho, respectively. The corresponding relative cooling powers are evaluated to be 398 and 525 J/kg. [ABSTRACT FROM AUTHOR]

In this paper, we reported on the magnetic properties and magneto-caloric effect (MCE) of the aluminium compounds Dy 2 CuAl 3 and Tm 2 CuAl 3 based on the magnetization and isothermal magnetization of various temperature measurements. Both compounds obey magnetic phase transition from a paramagnetic (PM) to ferromagnetic (FM) state (second order) around the Curie temperatures of T C  ∼ 24.5 and 4.7 K together with a considerable reversible MCE for Dy 2 CuAl 3 and Tm 2 CuAl 3 , respectively. The magnetic entropy change (-Δ S M ) and the relative cooling power ( RCP ) were estimated and discussed in terms of MCE. Maximum values of -Δ S M are 6.68 and 11.33 J/kg K for Dy 2 CuAl 3 and Tm 2 CuAl 3 , respectively, for a change in field of 0–5 T. Correspondingly, the values of RCP are 364 J/kg and 216 J/kg. [ABSTRACT FROM AUTHOR]