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.

应用现象学模型（PM）来模拟氧化铁纳米颗粒（IONs）的磁热（MC）效应。根据建模结果，推导了离子的MC参数，这是在1 T磁场下模拟磁化强度与温度的结果。半最大值为213 K时，全宽值非常可观，这为使离子制冷机（MR）中的ION发挥作用提供了重要的实践方法。由于ION可以在很大的温度范围内用作MR的有效材料，因此涵盖了相当重要的温度范围，包括室温和低温。可以得出结论，离子可作为MR的吉祥MC磁铁。特别是离子电涡流和磁滞损耗很小。