2024/02/27 by Hayyu, Altifani Rizky, Baran, Stanisław, Szytuła, Andrzej
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci)
paper · doi:10.48550/arxiv.2402.17912
Magnetocaloric performance of the RE5Pd2In4 (RE = Tb-Tm) rare earth compounds has been investigated using measurements of magnetization in the function of temperature and applied magnetic field. The maximum magnetic entropy change (-ΔSMmax) at magnetic flux density change (Δμ0 H) of 0-9~T has been determined to be 3.3~J⋅kg-1⋅K-1 at 62~K for Tb5Pd2In4, 7.0~J⋅kg-1⋅K-1 at 22~K for Dy5Pd2In4, 12.6~J⋅kg-1⋅K-1 at 22~K for Ho5Pd2In4, 12.1~J⋅kg-1⋅K-1 at 17~K for Er5Pd2In4 and 11.9~J⋅kg-1⋅K-1 at 9.0~K for Tm5Pd2In4. The temperature averaged entropy change (TEC) with 3~K span equals 3.2, 7.0, 12.6, 12.2 and 11.8~J⋅kg-1⋅K-1 for RE = Tb-Tm, respectively. The relative cooling power (RCP) and refrigerant capacity (RC) are equal to respectively 258 and 215~J⋅kg-1 in Tb5Pd2In4, 498 and 325~J⋅kg-1 in Dy5Pd2In4, 489 and 403~J⋅kg-1 in Ho5Pd2In4, 403 and 314~J⋅kg-1 in Er5Pd2In4 and 234 and 184~J⋅kg-1 in Tm5Pd2In4. The magnetocaloric properties of RE5Pd2In4 are comparable to those of other known magnetocaloric materials, which show good magnetocaloric performance at low temperatures. Among RE5Pd2In4, the highest values of parameters characterizing the magnetocaloric effect are found for RE = Ho and Er. Furthermore, for fixed RE element, the RE5Pd2In4 compound displays the highest RCP and RC values when compared to those of its isostructural RE5T2In4 (T = Ni, Pt) analogues.