中国物理B ›› 2019, Vol. 28 ›› Issue (8): 87401-087401.doi: 10.1088/1674-1056/28/8/087401

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

Quaternary antiferromagnetic Ba2BiFeS5 with isolated FeS4 tetrahedra

Shaohua Wang(王少华), Xiao Zhang(张晓), Hechang Lei(雷和畅)   

  1. 1 Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China;
    2 State Key Laboratory of Information Photonics and Optical Communications & School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2019-05-12 修回日期:2019-06-06 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: Hechang Lei E-mail:hlei@ruc.edu.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0300504), the National Natural Science Foundation of China (Grant Nos. 11574394, 11774423, and 11822412), the Fundamental Research Funds for the Central Universities, and the Research Funds of Renmin University of China (RUC) (Grant Nos. 15XNLQ07, 18XNLG14, and 19XNLG17).

Quaternary antiferromagnetic Ba2BiFeS5 with isolated FeS4 tetrahedra

Shaohua Wang(王少华)1, Xiao Zhang(张晓)2, Hechang Lei(雷和畅)1   

  1. 1 Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China;
    2 State Key Laboratory of Information Photonics and Optical Communications & School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2019-05-12 Revised:2019-06-06 Online:2019-08-05 Published:2019-08-05
  • Contact: Hechang Lei E-mail:hlei@ruc.edu.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0300504), the National Natural Science Foundation of China (Grant Nos. 11574394, 11774423, and 11822412), the Fundamental Research Funds for the Central Universities, and the Research Funds of Renmin University of China (RUC) (Grant Nos. 15XNLQ07, 18XNLG14, and 19XNLG17).

摘要:

We report the detailed physical properties of quaternary compound Ba2BiFeS5 with the key structural ingredient of isolated FeS4 tetrahedra. Magnetization and heat capacity measurements clearly indicate that Ba2BiFeS5 has a paramagnetic to antiferromagnetic transition at about 30 K. The calculated magnetic entropy above ordering temperature is much smaller than theoretical value for high-spin Fe3+ ion with S=5/2, implying the possible short-range antiferromagnetic fluctuation in Ba2BiFeS5.

关键词: isolated FeS4 tetrahedra, antiferromagnetic transition, short-range antiferromagnetic fluctuation

Abstract:

We report the detailed physical properties of quaternary compound Ba2BiFeS5 with the key structural ingredient of isolated FeS4 tetrahedra. Magnetization and heat capacity measurements clearly indicate that Ba2BiFeS5 has a paramagnetic to antiferromagnetic transition at about 30 K. The calculated magnetic entropy above ordering temperature is much smaller than theoretical value for high-spin Fe3+ ion with S=5/2, implying the possible short-range antiferromagnetic fluctuation in Ba2BiFeS5.

Key words: isolated FeS4 tetrahedra, antiferromagnetic transition, short-range antiferromagnetic fluctuation

中图分类号:  (Tunneling phenomena; Josephson effects)

  • 74.50.+r
75.20.Ck (Nonmetals) 75.30.-m (Intrinsic properties of magnetically ordered materials) 75.30.Cr (Saturation moments and magnetic susceptibilities)