Enhanced magnetocaloric effect in undercooled rare earth intermetallic compounds RNi (R = Gd, Ho and Er)

Calculated properties of GdNi intermetallic compound for the nitrogen liquefaction process: insight into ab-initio computations and Monte Carlo simulation

“…It was observed that at T c which obtained from / dM dt and c i curves (figure 4), each ( ) -DS T mag curve for GdNi attains a maximum value (-DS mag Max ). -DS , mag Max is found to be 17,13 JKg −1 K −1 at 5 T, which is consistent with that obtained experimentally (17.3JKg −1 K −1 , 17JKg −1 K −1 ) [16,35]. This good agreement has been often found for different materials using ab-initio calculations and MC simulation [30,36].…”

“…As reported in Ref [9], DyFeSi intermetallic compound which undergoes a second-order magnetic transition from ferromagnetic to paramagnetic showed a maximum of magnetic entropy change (DS mag Max ) = 4.8 J Kg −1 . K under a field change of 1 T. J Kurian et al showed that a ferromagnetic behavior [13][14][15] observed in GdNi intermetallic compound, which is synthesized by arc-melting technic with a Curie temperature (T C ) of 69 K [16]. Moreover, their results proved that the peak value of magnetic entropy change (DS mag Max ) for the magnetic field change of 0-5 T is estimated to be 18 J Kg.…”

“…−1 K, and the corresponding relative cooling power (RCP) attains its value of 587 J Kg −1 . It is worth noting that the synthesis method has a clear effect on the magnetic properties and magnetocaloric effect, as indicated in [16].…”