Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (2): 27502-027502.doi: 10.1088/1674-1056/22/2/027502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Magnetic transition and large reversible magnetocaloric effect in EuCu1.75P2 compound

霍德璇a b, 廖罗兵a, 李领伟a b, 李妙a, 钱正洪b   

  1. a Institute of Materials Physics, Hangzhou Dianzi University, Hangzhou 310018, China;
    b Center for Integrated Spintronic Device, Hangzhou Dianzi University, Hangzhou 310018, China
  • 收稿日期:2012-06-01 修回日期:2012-06-30 出版日期:2013-01-01 发布日期:2013-01-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11004044) and the Zhejiang Provincial Natural Science Foundation, China (Grant No. Y4110581).

Magnetic transition and large reversible magnetocaloric effect in EuCu1.75P2 compound

Huo De-Xuan (霍德璇)a b, Liao Luo-Bing (廖罗兵)a, Li Ling-Wei (李领伟)a b, Li Miao (李妙)a, Qian Zheng-Hong (钱正洪 )b   

  1. a Institute of Materials Physics, Hangzhou Dianzi University, Hangzhou 310018, China;
    b Center for Integrated Spintronic Device, Hangzhou Dianzi University, Hangzhou 310018, China
  • Received:2012-06-01 Revised:2012-06-30 Online:2013-01-01 Published:2013-01-01
  • Contact: Huo De-Xuan E-mail:dxhuo@hdu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11004044) and the Zhejiang Provincial Natural Science Foundation, China (Grant No. Y4110581).

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摘要： The magnetocaloric effect (MCE) in EuCu1.75P2 compound is studied by the magnetization and heat capacity measurements. Magnetization and modified Arrott plots indicate that the compound undergoes a second-order phase transition at TC～51 K. A large reversible MCE is observed around TC. The values of maximum magnetic entropy change (-ΔSMmax) reach 5.6 J·kg-1·K-1 and 13.3 J·kg-1·K-1 for the field change of 2 T and 7 T, respectively, with no obvious hysteresis loss in the vicinity of Curie temperature. The corresponding maximum adiabatic temperature changes (ΔTadmax) are evaluated to be 2.1 K and 5.0 K. The magnetic transition and the origin of large MCE in EuCu1.75P2 are also discussed.

关键词: EuCu1.75P2 compound, magnetocaloric effect, magnetic transition, critical behavior

Abstract: The magnetocaloric effect (MCE) in EuCu1.75P2 compound is studied by the magnetization and heat capacity measurements. Magnetization and modified Arrott plots indicate that the compound undergoes a second-order phase transition at TC～51 K. A large reversible MCE is observed around TC. The values of maximum magnetic entropy change (-ΔSMmax) reach 5.6 J·kg-1·K-1 and 13.3 J·kg-1·K-1 for the field change of 2 T and 7 T, respectively, with no obvious hysteresis loss in the vicinity of Curie temperature. The corresponding maximum adiabatic temperature changes (ΔTadmax) are evaluated to be 2.1 K and 5.0 K. The magnetic transition and the origin of large MCE in EuCu1.75P2 are also discussed.

Key words: EuCu1.75P2 compound, magnetocaloric effect, magnetic transition, critical behavior

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

  • 75.30.Sg
75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))