Magnetic properties and promising magnetocaloric performances in the antiferromagnetic GdFe_(2)Si_(2)compound

作     者：Yikun Zhang Jian Zhu Shuo Li Zhenqian Zhang Jiang Wang Zhongming Ren 张义坤;朱剑;李硕;张振乾;王江;任忠鸣

作者机构：School of Electronics and Information EngineeringHangzhou Dianzi UniversityHangzhou 310012China State Key Laboratory of Advanced Special Steels&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Key Laboratory of Novel Materials for Sensor of Zhejiang ProvinceHangzhou Dianzi UniversityHangzhou 310012China 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第5期

页      面：1345-1352页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China (52071197) the “Pioneer” and “Leading Goose” R&D Program of Zhejiang (2022C01230) the Science and Technology Committee of Shanghai Municipality (19ZR1418300 and 19DZ2270200) the Independent Research and Development Project of State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University (SKLASS 2021-Z05) 

主　　题：rare earths antiferromagnetic GdFe_(2)Si_(2)compound magnetocaloric performances cryogenic magnetic refrigeration magnetic phase transition 

摘      要：The magnetocaloric(MC) effect-based solidstate magnetic refrigeration(MR) technology has been recognized as an alternative novel method to the presently commercialized gas compression technology. Searching for suitable candidates with promising MC performances is one of the most urgent tasks. Herein, combined experimental and theoretical investigations on the magnetic properties, magnetic phase transition, and cryogenic MC performances of Gd Fe_(2)Si_(2)have been performed. An unstable antiferromagnetic(AFM) interaction in the ground state has been confirmed in Gd Fe_(2)Si_(2). Moreover, a huge reversible cryogenic MC effect and promising MC performances in Gd Fe_(2)Si_(2)have been *** maximum isothermal magnetic entropy change, temperature-averaged entropy change with 2 K lift, and refrigerant capacity for Gd Fe_(2)Si_(2)were 30.01 J kg^(-1)K^(-1),29.37 J kg^(-1)K^(-1), and 328.45 J kg^(-1)at around 8.6 K with the magnetic change of 0–7 T, respectively. Evidently, the values of these MC parameters for the present AFM compound Gd Fe_(2)Si_(2)are superior to those of most recently reported rareearth-based MC materials, suggesting the potential application for active cryogenic MR.