A M(o)ssbauer study of the magnetic coupling in iron phosphorous trisulfides

• 来源期刊: 中国物理（英文版）
• 关键词: layered compound M(o)ssbaucr spectroscopy magnetic coupling Ising model
• 年，卷（期）: 2004,（10）
• 页码范围: 1652-1656
• 页数: 5页
• 语种: 英文

摘要

The polycrystalline sample of layered compound FePS3 has been investigated by using M(o)ssbauer spectroscopy (12K to 300K), magnetic susceptibility measurements, x-ray diffraction and FTIR spectroscopy. The antiferromagnetic order exists below TN=120.5±1K. The M(o)ssbauer spectra below TN indicate that the magnetization axis is perpendicular to the layer of FePS3, and the divalent iron cations are in their high spin configurations. By fitting the hyperfine field parameters near the Neel 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.