中国物理B ›› 2004, Vol. 13 ›› Issue (10): 1652-1656.doi: 10.1088/1009-1963/13/10/013

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A M?ssbauer study of the magnetic coupling in iron phosphorous trisulfides

戴耀东1, 杨亚新2, 何云2, 黄红波2, 夏元复2, 王林3   

  1. (1)College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; (2)Department of Physics, Nanjing University, Nanjing 210093, China; (3)Department of Physics, Xinyang Normal University, Xinyang 464000, China
  • 收稿日期:2004-03-11 修回日期:2004-05-25 出版日期:2004-10-20 发布日期:2005-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No G19835050).

A Mössbauer study of the magnetic coupling in iron phosphorous trisulfides

Dai Yao-Dong (戴耀东)a, Wang Lin (王林)b, Yang Ya-Xin (杨亚新)c, He Yun (何云)c, Huang Hong-Bo (黄红波)c, Xia Yuan-Fu (夏元复)c    

  1. a College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; b Department of Physics, Xinyang Normal University, Xinyang 464000, China; c Department of Physics, Nanjing University, Nanjing 210093, China
  • Received:2004-03-11 Revised:2004-05-25 Online:2004-10-20 Published:2005-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No G19835050).

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摘要： The polycrystalline sample of layered compound FePS_3 has been investigated by using M?ssbauer spectroscopy (12K to 300K), magnetic susceptibility measurements, x-ray diffraction and FTIR spectroscopy. The antiferromagnetic order exists below T_N=120.5±1K. The M?ssbauer spectra below T_N indicate that the magnetization axis is perpendicular to the layer of FePS_3, and the divalent iron cations are in their high spin configurations. By fitting the hyperfine field parameters near the Néel temperature, we obtain information on the nature of magnetic interactions in the material. The results show that the magnetic coupling can be treated by the two-dimensional Ising model, and it can be interpreted on the basis of a crystal-field effect.

Abstract: The polycrystalline sample of layered compound FePS$_3$ has been investigated by using Mössbauer spectroscopy (12K to 300K), magnetic susceptibility measurements, x-ray diffraction and FTIR spectroscopy. The antiferromagnetic order exists below $T_{\rm N}$=120.5±1K. The Mössbauer spectra below $T_{\rm N}$ indicate that the magnetization axis is perpendicular to the layer of FePS$_3$, and the divalent iron cations are in their high spin configurations. By fitting the hyperfine field parameters near the Néel temperature, we obtain information on the nature of magnetic interactions in the material. The results show that the magnetic coupling can be treated by the two-dimensional Ising model, and it can be interpreted on the basis of a crystal-field effect.

Key words: layered compound, Mössbauer spectroscopy, magnetic coupling, Ising model

中图分类号:  (M?ssbauer effect; other γ-ray spectroscopy)

  • 76.80.+y
75.30.Cr (Saturation moments and magnetic susceptibilities) 78.30.Hv (Other nonmetallic inorganics) 75.50.Ee (Antiferromagnetics) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 75.10.Hk (Classical spin models) 75.40.-s (Critical-point effects, specific heats, short-range order) 75.10.Dg (Crystal-field theory and spin Hamiltonians)