Abstract
A phenomenological model (PM) is applied to simulate the magnetocaloric (MC) effect of iron oxide nanoparticles (IONs). Based on modeling results, MC parameters of IONs are deduced as the consequences of simulation for magnetization vs. temperature under 1 T magnetic field. There is a remarkable value of full-width at half-maximum of 213 K, giving an important practice for functioning IONs in the magnetic refrigerator (MR). Since IONs can be functioned over a large temperature range as an effective material for MR, covering a substantial and important range of temperatures, including room temperature and cryogenic temperatures. It is concluded that IONs can function as an auspicious MC magnet for the MR; especially IONs have tiny eddy current and hysteresis loss.