中国物理B ›› 2023, Vol. 32 ›› Issue (11): 117501-117501.doi: 10.1088/1674-1056/ace684

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Structure, magnetism and magnetocaloric effects in Er5Si3Bx (x=0.3, 0.6) compounds

Zhihong Hao(郝志红)1,†, Hui Liu(刘辉)2, and Juguo Zhang(张聚国)3   

  1. 1 School of Rare Earth and New Materials Engineering, Gannan University of Science and Technology, Ganzhou 341000, China;
    2 School of Intelligent Manufacturing and Automotive Engineering, Gannan University of Science and Technology, Ganzhou Innovation Center of Rare earth Permanent Magnet Material Advanced Manufacturing and Intelligent Equipment Technology, Ganzhou 341000, China;
    3 School of Rare Earth and New Materials Engineering, Gannan University of Science and Technology, Ganzhou Key Laboratory of Advanced Processing and Technology Optimization of High Performance Tungsten Base Materials, Ganzhou 341000, China
  • 收稿日期:2023-05-26 修回日期:2023-07-03 接受日期:2023-07-12 出版日期:2023-10-16 发布日期:2023-10-16
  • 通讯作者: Zhihong Hao E-mail:love_hzh@126.com
  • 基金资助:
    This work was supported by Science and Technology Research Project for Education Department of Jiangxi Province, China (Grant No. GJJ218509).

Structure, magnetism and magnetocaloric effects in Er5Si3Bx (x=0.3, 0.6) compounds

Zhihong Hao(郝志红)1,†, Hui Liu(刘辉)2, and Juguo Zhang(张聚国)3   

  1. 1 School of Rare Earth and New Materials Engineering, Gannan University of Science and Technology, Ganzhou 341000, China;
    2 School of Intelligent Manufacturing and Automotive Engineering, Gannan University of Science and Technology, Ganzhou Innovation Center of Rare earth Permanent Magnet Material Advanced Manufacturing and Intelligent Equipment Technology, Ganzhou 341000, China;
    3 School of Rare Earth and New Materials Engineering, Gannan University of Science and Technology, Ganzhou Key Laboratory of Advanced Processing and Technology Optimization of High Performance Tungsten Base Materials, Ganzhou 341000, China
  • Received:2023-05-26 Revised:2023-07-03 Accepted:2023-07-12 Online:2023-10-16 Published:2023-10-16
  • Contact: Zhihong Hao E-mail:love_hzh@126.com
  • Supported by:
    This work was supported by Science and Technology Research Project for Education Department of Jiangxi Province, China (Grant No. GJJ218509).

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摘要： We investigate the structure, magnetic properties, magnetic phase transitions and magnetocaloric effects (MCEs) of Er5Si3Bx (x=0.3, 0.6) compounds. The Er5Si3Bx (x=0.3, 0.6) compounds crystalize in a Mn5Si3 type hexagonal structure (space group: P63/cm) and exhibit a successive complicated magnetic phase transition. The extensive magnetic phase transitions contribute to the broad temperature range of MCEs exhibiting in Er5Si3Bx (x=0.3, 0.6) compounds, with maximum magnetic entropy change (-ΔSMmax) and refrigeration capacity of 10.2 J·kg-1·K-1, 356.3 J/kg and 11.5 J·kg-1·K-1, 393.3 J/kg under varying magnetic fields 0-5 T, respectively. Remarkably, the δTFWHM values (the temperature range corresponding to 1/2×|-ΔSMmax|) of Er5Si3Bx (x=0.3, 0.6) compounds were up to 41.8 K and 39.6 K, respectively. Thus, the present work provides a potential magnetic refrigeration material with a broad temperature range MCEs for applications in cryogenic magnetic refrigerators.

关键词: magnetic materials, cryogenic magnetic refrigeration, magnetic phase transition, magnetocaloric effects

Abstract: We investigate the structure, magnetic properties, magnetic phase transitions and magnetocaloric effects (MCEs) of Er5Si3Bx (x=0.3, 0.6) compounds. The Er5Si3Bx (x=0.3, 0.6) compounds crystalize in a Mn5Si3 type hexagonal structure (space group: P63/cm) and exhibit a successive complicated magnetic phase transition. The extensive magnetic phase transitions contribute to the broad temperature range of MCEs exhibiting in Er5Si3Bx (x=0.3, 0.6) compounds, with maximum magnetic entropy change (-ΔSMmax) and refrigeration capacity of 10.2 J·kg-1·K-1, 356.3 J/kg and 11.5 J·kg-1·K-1, 393.3 J/kg under varying magnetic fields 0-5 T, respectively. Remarkably, the δTFWHM values (the temperature range corresponding to 1/2×|-ΔSMmax|) of Er5Si3Bx (x=0.3, 0.6) compounds were up to 41.8 K and 39.6 K, respectively. Thus, the present work provides a potential magnetic refrigeration material with a broad temperature range MCEs for applications in cryogenic magnetic refrigerators.

Key words: magnetic materials, cryogenic magnetic refrigeration, magnetic phase transition, magnetocaloric effects

中图分类号:  (Magnetocaloric effect, magnetic cooling)

  • 75.30.Sg
75.47.Np (Metals and alloys)