Magnetocaloric Effect in NdNi4Si Compound
M. Falkowski, T. Toliński and A. Kowalczyk
Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
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On the basis of the thermodynamic approach, we report the magnetocaloric properties of the ternary ferromagnetic NdNi4Si compound with magnetic phase transition temperature TC at 8 K. The saturated magnetic moment in H = 9 T is equal to 1.5 μB/f.u. at 4.2 K and the compound crystallizes in the hexagonal CaCu5-type structure (space group P6/mmm). The magnetocaloric effect was calculated in terms of the isothermal magnetic entropy change ΔSM as well as the adiabatic temperature change ΔTad using the specific heat data and magnetization measurements. Within the second order phase transition significant values of these parameters have been observed.
DOI: 10.12693/APhysPolA.121.1290
PACS numbers: 75.30.Sg, 75.30.Kz, 75.47.Np, 75.40.-s