Abstract
Magnetism and magnetocaloric effect in REAgAl (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 TC∼14 and 18K for ErAgAl and HoAgAl, respectively. For a field change of 0–7T, the maximum magnetic entropy change reaches 13.7 and 13.8J/kgK for RE=Er and Ho, respectively. The corresponding relative cooling powers are evaluated to be 398 and 525J/kg.
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