中国物理B ›› 2017, Vol. 26 ›› Issue (2): 27501-027501.doi: 10.1088/1674-1056/26/2/027501

所属专题: TOPICAL REVIEW — Magnetism, magnetic materials, and interdisciplinary research

• TOPICAL REVIEW—Magnetism, magnetic materials, and interdisciplinary research • 上一篇    下一篇

The magnetic properties and magnetocaloric effects in binary R-T (R=Pr, Gd, Tb, Dy, Ho, Er, Tm; T=Ga, Ni, Co, Cu) intermetallic compounds

Xin-Qi Zheng(郑新奇), Bao-Gen Shen(沈保根)   

  1. 1 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    2 Institute of Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2016-12-05 修回日期:2016-12-15 出版日期:2017-02-05 发布日期:2017-02-05
  • 通讯作者: Bao-Gen Shen E-mail:shenbg@aphy.iphy.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274357, 51501005, 51590880, and 11674008), the Fundamental Research Funds for the Central Universities, China (Grant No. FRF-TP-15-010A1), the China Postdoctoral Science Foundation (Grant No. 2016M591071), and the Key Research Program of the Chinese Academy of Sciences (Grant No. KJZD-EW-M05).

The magnetic properties and magnetocaloric effects in binary R-T (R=Pr, Gd, Tb, Dy, Ho, Er, Tm; T=Ga, Ni, Co, Cu) intermetallic compounds

Xin-Qi Zheng(郑新奇)1, Bao-Gen Shen(沈保根)2   

  1. 1 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    2 Institute of Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-12-05 Revised:2016-12-15 Online:2017-02-05 Published:2017-02-05
  • Contact: Bao-Gen Shen E-mail:shenbg@aphy.iphy.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274357, 51501005, 51590880, and 11674008), the Fundamental Research Funds for the Central Universities, China (Grant No. FRF-TP-15-010A1), the China Postdoctoral Science Foundation (Grant No. 2016M591071), and the Key Research Program of the Chinese Academy of Sciences (Grant No. KJZD-EW-M05).

摘要:

In this paper, we review the magnetic properties and magnetocaloric effects (MCE) of binary R-T (R=Pr, Gd, Tb, Dy, Ho, Er, Tm; T=Ga, Ni, Co, Cu) intermetallic compounds (including RGa series, RNi series, R12Co7 series, R3Co series and RCu2 series), which have been investigated in detail in the past several years. The R-T compounds are studied by means of magnetic measurements, heat capacity measurements, magnetoresistance measurements and neutron powder diffraction measurements. The R-T compounds show complex magnetic transitions and interesting magnetic properties. The types of magnetic transitions are investigated and confirmed in detail by multiple approaches. Especially, most of the R-T compounds undergo more than one magnetic transition, which has significant impact on the magnetocaloric effect of R-T compounds. The MCE of R-T compounds are calculated by different ways and the special shapes of MCE peaks for different compounds are investigated and discussed in detail. To improve the MCE performance of R-T compounds, atoms with large spin (S) and atoms with large total angular momentum (J) are introduced to substitute the related rare earth atoms. With the atom substitution, the maximum of magnetic entropy change (Δ SM), refrigerant temperature width (Twidth) or refrigerant capacity (RC) is enlarged for some R-T compounds. In the low temperature range, binary R-T (R=Pr, Gd, Tb, Dy, Ho, Er, Tm; T=Ga, Ni, Co, Cu) intermetallic compounds (including RGa series, RNi series, R12Co7 series, R3Co series and RCu2 series) show excellent performance of MCE, indicating the potential application for gas liquefaction in the future.

关键词: magnetocaloric effect, magnetic entropy change, magnetic property, neutron diffraction, magnetic structure

Abstract:

In this paper, we review the magnetic properties and magnetocaloric effects (MCE) of binary R-T (R=Pr, Gd, Tb, Dy, Ho, Er, Tm; T=Ga, Ni, Co, Cu) intermetallic compounds (including RGa series, RNi series, R12Co7 series, R3Co series and RCu2 series), which have been investigated in detail in the past several years. The R-T compounds are studied by means of magnetic measurements, heat capacity measurements, magnetoresistance measurements and neutron powder diffraction measurements. The R-T compounds show complex magnetic transitions and interesting magnetic properties. The types of magnetic transitions are investigated and confirmed in detail by multiple approaches. Especially, most of the R-T compounds undergo more than one magnetic transition, which has significant impact on the magnetocaloric effect of R-T compounds. The MCE of R-T compounds are calculated by different ways and the special shapes of MCE peaks for different compounds are investigated and discussed in detail. To improve the MCE performance of R-T compounds, atoms with large spin (S) and atoms with large total angular momentum (J) are introduced to substitute the related rare earth atoms. With the atom substitution, the maximum of magnetic entropy change (Δ SM), refrigerant temperature width (Twidth) or refrigerant capacity (RC) is enlarged for some R-T compounds. In the low temperature range, binary R-T (R=Pr, Gd, Tb, Dy, Ho, Er, Tm; T=Ga, Ni, Co, Cu) intermetallic compounds (including RGa series, RNi series, R12Co7 series, R3Co series and RCu2 series) show excellent performance of MCE, indicating the potential application for gas liquefaction in the future.

Key words: magnetocaloric effect, magnetic entropy change, magnetic property, neutron diffraction, magnetic structure

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

  • 75.30.Sg
75.50.Cc (Other ferromagnetic metals and alloys) 75.50.Ee (Antiferromagnetics)