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Investigation of variable temperature Mössbauer spectrum of YFe$_{0.5}$Cr$_{0.5}$O$_3$ perovskite

In this paper, we reported the preparation of YFe$_{0.5}$Cr$_{0.5}$O$_3$ by the sol-gel method and studied its structure and Mössbauer spectrum at variable temperatures. X-ray diffraction(XRD) analysis exhibits that the sample has the orthorhombic structure with the Pnma space group, and the energy dispersive spectroscopy (EDS) analysis shows that the sample has Fe/Cr = 1:1, indicating that the sample is Fe half-doped YCrO$_3$. The hyperfine parameters of the Mössbauer spectrum at room temperature confirm that the characteristics of 57Fe in the sample were trivalent hexacoordinated high-spin(s=5/2), and the coexistence of doublet and the sextets at 250K indicate that the sample has superparamagnetic relaxation. The Mössbauer spectrum records the magnetic phase transition in the temperature range of 250K-300K.