Investigations on Thermomagnetic Properties of YbFe 2 As 2

A phenomenological model (PM) is applied to simulate magnetocaloric effect (MCE) of YbFe2As2 (YFA) sample. Based on PM, MCE parameters are deduced as the results of simulation for magnetization versus temperature under 5 T magnetic field. The maximum value of magnetic entropy change is 2.55 J/kg K. The values of full-width at half-maximum relative cooling power and refrigerant capacity are 34 K, 87 J/kg, and 62.6 J/kg, respectively. It is recommended that YFA can be used as an effective material of magnetic refrigerator over a temperature range, covering a significant range of temperature between 0 and 50 K. This indicates that YFA is considered as the MCE material functioning at a liquid helium temperature zone.