The transition metal phosphorus trichalcogenides MnPS
3 and the FePS
3 are CdCl
2 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 Mn
0.5Fe
0.5PS
3 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 FePS
3 and Mn
0.5Fe
0.5PS
3, in detail. In the anti-ferromagnetic state of FePS
3, the hyperfine magnetic field
H int increases with decreasing temperature and the Isomer shift I. S. increases slightly with decreasing temperature. However in Mn
0.5Fe
0.5PS
3, 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 Mn
0.5Fe
0.5PS
3, the Mössbauer spectra suggest that the magnetic interactions exist far above
T g.
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