Mössbauer study of La0.75Ca0.25Mn0.98Fe0.02O3 compound

A thorough study of the Mössbauer spectra (MS) of a lightly iron doped (2%) polycrystalline ${\mathrm{La}}_{\mathrm{0.75}}{\mathrm{Ca}}_{\mathrm{0.25}}{\mathrm{MnO}}_{\mathrm{3}}$ compound has been carried out from $\text{T=4.2}$ K up to 300 K. The MS for ${\mathrm{T>T}}_c$ and at $\text{T=4.2}$ K show one component. The corresponding hyperfine parameters are compatible with $\text{S=5/2}$ ${\mathrm{Fe}}^{\text{3+}}$ in octahedral coordination. As temperature increases from 4.2 K the spectra consist of several broad sextets and doublets (especially the $T_c$ ). This first reported behavior of MS resembles that of ferromagnetic clusters.