Large magnetocaloric effect in Er2O3 compounds at cryogenic temperature

• 作者: A.Elouafi S.Derkaoui R.Moubah A.Tizliouine A.Charkaoui H.Lassri
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: MAGNETISM AND MAGNETIC MATERIALS
• 页码范围: 1232-1237
• 页数: 6页
• 语种: 英文

摘要

We investigated the magnetocaloric effect in commercial Er2O3 powders which presents almost no hysteresis losses at low temperature.At a magnetic field change of 5 T,it displays large magnetic en-tropy change (-△SM)max of 15.02 J/(kg·K) and a refrigerant capacity (RC) of 311 J/K at Néel temperature TN =3.32 K.The magnetic transition was found to be of a second-order.The maximum values of adiabatic temperature change (ATad)max reach 0.70 K for a magnetic field change of 1 T.The large value,of(-SM)max as well as no hysteresis loss,makes Er2O3 a promising material as a magnetic refrigerant at low temperature.