Magnetic properties and magnetocaloric effect in the rare earth-rich phases RE4PtMg (RE = Ho and Er)
作者： Lingwei Li , Oliver Niehaus , Marcel Kersting , Rainer Pöttgen
DOI: 10.1016/J.INTERMET.2015.03.004
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摘要: Abstract The magnetic and magnetocaloric properties of Ho4PtMg Er4PtMg with cubic Gd4RhIn-type structure have been investigated by magnetization heat capacity measurements. compounds undergo a second order phase transition from paramagnetic to ferromagnetic state at Curie temperatures TC ∼ 28 16 K for Er4PdMg, respectively. A large reversible MCE was observed around TC both compounds. For field change 0–7 T, the maximum values entropy (−ΔSMmax) are 16.9 22.5 J/kg K Er4PtMg, corresponding adiabatic temperature (ΔTadmax) 5.3 6.5 K.
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