中国物理B ›› 2004, Vol. 13 ›› Issue (10): 1652-1656.doi: 10.1088/1009-1963/13/10/013
戴耀东1, 杨亚新2, 何云2, 黄红波2, 夏元复2, 王林3
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
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.
中图分类号: (M?ssbauer effect; other γ-ray spectroscopy)