Mössbauer study of the transition metal phosphorus trichalcogenide FePS3 and spin glass Mn0.5Fe0.5PS3 |
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| Authors: | Shuichi Ban Yoshiki Takano Naoki Ohkubo Hisanobu Hoya Yumiko Takahashi Kouichi Takase Kazuko Sekizawa |
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| Institution: | (1) Physics Laboratory, College of Science and Technology, Nihon University, 7-24-1 Narashinodai, Funabashi-City Chiba, 274-8501, Japan;(2) Department of Physics, College of Science and Technology, Nihon University, 1-8-14 Kanda Surugadai, Chiyoda-ku Tokyo, 101-8308, Japan |
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| Abstract: | The transition metal phosphorus trichalcogenides MnPS3 and the FePS3 are CdCl2 type layered compounds, where the transition metal ions form a hexagonal lattice. While these compounds order anti-ferromagnetically at low temperature, the magnetic structures are different. We have reported that these mixtures Mn0.5Fe0.5PS3 is a spin glass with a glass transition temperature T g=33.7 K. Then, in this work, we report that the results of the temperature variation of the 57Fe Mössbauer spectra of FePS3 and Mn0.5Fe0.5PS3, in detail. In the anti-ferromagnetic state of FePS3, the hyperfine magnetic field H int increases with decreasing temperature and the Isomer shift I. S. increases slightly with decreasing temperature. However in Mn0.5Fe0.5PS3, the two broadened peaks are observed and the two peaks became a single peak with decreasing temperature at about 50.0 K, which is higher than T g=33.7 K. In the spin glass Mn0.5Fe0.5PS3, the Mössbauer spectra suggest that the magnetic interactions exist far above T g. |
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| Keywords: | spin glasses M?ssbauer effect remanence manganese compounds iron compounds transition metal phosphorus trichalcogenides magnetic interactions |
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