首页|Large reversible magnetocaloric effect in antiferromagnetic Er3Si2C2 compound

Large reversible magnetocaloric effect in antiferromagnetic Er3Si2C2 compound

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The magnetic properties,magnetic phase transition and magnetocaloric effects(MCE)of Er3Si2C2 com-pound were investigated based on theoretical calculations and experimental analysis.Based on the first principles calculations,the antiferromagnetic(AFM)ground state type in Er3Si2C2 compound was pre-dicted and its electronic structure was investigated.The experimental results show that Er3Si2C2 com-pound is an AFM compound with the Néel temperature(TN)of 7 K and undergoes a field-induced first-order magnetic phase transition from AFM to ferromagnetic(FM)under magnetic fields exceeding 0.6 T at 2 K.The magnetic transition process of Er3Si2C2 compound was investigated and discussed.The values of the maximum magnetic entropy change(-ΔSMmax)and the refrigeration capacity(RC)are 17 J/(kg.K)and 193 J/kg under changing magnetic fields of 0-5 T,respectively.As a potential cryogenic magnetic refrigerant,the Er3Si2C2 compound also provides an interesting research medium to study the magnetic phase transition process.

Magnetic materialsMagnetocaloricMetamagnetic transitionsMagnetic phase transitionRare earths

Hao Sun、Lu Tian、Xinqiang Gao、Zhaojun Mo、Jun Shen、Baogen Shen

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School of Rare Earths,University of Science and Technology of China,Hefei,230026,China

Ganjiang Innovation Academy,Chinese Academy of Sciences,Ganzhou,34100,China

Department of Energy and Power Engineering,School of Mechanical Engineering,Beijing Institute of Technology,Beijing,100081,China

National Key Research and Development Program of ChinaNational Science Foundation for Excellent Young ScholarsNational Science Foundation for Distinguished Young ScholarsNational Natural Science Foundation of ChinaGanjiang Innovation Academy,Chinese Academy of Sciences

2021YFB3501204522221075192560552171195E055B002

2024

10.1016/j.jre.2023.07.024

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(8)