中国物理B ›› 2020, Vol. 29 ›› Issue (6): 67502-067502.doi: 10.1088/1674-1056/ab889f

所属专题: Virtual Special Topic — Magnetism and Magnetic Materials

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

Physical properties and magnetic structure of a layered antiferromagnet PrPd0.82Bi2

Meng Yang(杨萌), Changjiang Yi(伊长江), Fengfeng Zhu(朱锋锋), Xiao Wang(王霄), Dayu Yan(闫大禹), Shanshan Miao(苗杉杉), Yixi Su(苏夷希), Youguo Shi(石友国)   

  1. 1 Beijing National Laboratory for Condensed Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Jülich Centre for Neutron Science(JCNS) at Heinz Maier-Leibnitz Zentrum(MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
  • 收稿日期:2019-03-05 修回日期:2020-04-03 出版日期:2020-06-05 发布日期:2020-06-05
  • 通讯作者: Yixi Su, Youguo Shi E-mail:y.su@fz-juelich.de;ygshi@iphy.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0302901 and 2016YFA0300604), the National Natural Science Foundation of China (Grant No. 11774399), Beijing Natural Science Foundation, China (Grant No. Z180008), the K. C. Wong Education Foundation (Grant No. GJTD-2018-01), the DAAD-PPP programme, and the joint German-Sino HGF-OCPC Postdoc Programme.

Physical properties and magnetic structure of a layered antiferromagnet PrPd0.82Bi2

Meng Yang(杨萌)1,2, Changjiang Yi(伊长江)1, Fengfeng Zhu(朱锋锋)3, Xiao Wang(王霄)3, Dayu Yan(闫大禹)1,2, Shanshan Miao(苗杉杉)1, Yixi Su(苏夷希)3, Youguo Shi(石友国)1,2   

  1. 1 Beijing National Laboratory for Condensed Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Jülich Centre for Neutron Science(JCNS) at Heinz Maier-Leibnitz Zentrum(MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
  • Received:2019-03-05 Revised:2020-04-03 Online:2020-06-05 Published:2020-06-05
  • Contact: Yixi Su, Youguo Shi E-mail:y.su@fz-juelich.de;ygshi@iphy.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0302901 and 2016YFA0300604), the National Natural Science Foundation of China (Grant No. 11774399), Beijing Natural Science Foundation, China (Grant No. Z180008), the K. C. Wong Education Foundation (Grant No. GJTD-2018-01), the DAAD-PPP programme, and the joint German-Sino HGF-OCPC Postdoc Programme.

摘要: We report the physical properties, crystalline and magnetic structures of singe crystals of a new layered antiferromagnetic (AFM) material PrPd0.82Bi2. The measurements of magnetic properties and heat capacity indicate an AFM phase transition at TN~7 K. A large Sommerfeld coefficient of 329.23 mJ·mol-1·K-2 is estimated based on the heat capacity data, implying a possible heavy-fermion behavior. The magnetic structure of this compound is investigated by a combined study of neutron powder and single-crystal diffraction. It is found that an A-type AFM structure with magnetic propagation wavevector k=(0 0 0) is formed below TN. The Pr3+ magnetic moment is aligned along the crystallographic c-axis with an ordered moment of 1.694(3) μB at 4 K, which is smaller than the effective moment of the free Pr3+ ion of 3.58 μB. PrPd0.82Bi2 can be grown as large as 1 mm×1 cm in area with a layered shape, and is very easy to be cleaved, providing a unique opportunity to study the interplay between magnetism, possible heavy fermions, and superconductivity.

关键词: correlated electronic system, layered antiferromagnet, neutron scattering, magnetic structure

Abstract: We report the physical properties, crystalline and magnetic structures of singe crystals of a new layered antiferromagnetic (AFM) material PrPd0.82Bi2. The measurements of magnetic properties and heat capacity indicate an AFM phase transition at TN~7 K. A large Sommerfeld coefficient of 329.23 mJ·mol-1·K-2 is estimated based on the heat capacity data, implying a possible heavy-fermion behavior. The magnetic structure of this compound is investigated by a combined study of neutron powder and single-crystal diffraction. It is found that an A-type AFM structure with magnetic propagation wavevector k=(0 0 0) is formed below TN. The Pr3+ magnetic moment is aligned along the crystallographic c-axis with an ordered moment of 1.694(3) μB at 4 K, which is smaller than the effective moment of the free Pr3+ ion of 3.58 μB. PrPd0.82Bi2 can be grown as large as 1 mm×1 cm in area with a layered shape, and is very easy to be cleaved, providing a unique opportunity to study the interplay between magnetism, possible heavy fermions, and superconductivity.

Key words: correlated electronic system, layered antiferromagnet, neutron scattering, magnetic structure

中图分类号:  (Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)

  • 75.30.Mb
75.50.Ee (Antiferromagnetics) 25.40.Dn (Elastic neutron scattering) 28.20.Cz (Neutron scattering)