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The results of fabrication process and characterization of Bi1-xGdxFeO3 (x = 0.05, 0.07, 0.10) ceramics are
reported in the paper. The samples were prepared by standard solid state reaction method from the mixture
of oxides: Bi2O3, Fe2O3 and Gd2O3. The influence of Gd substitution on the microstructure and density of
Bi1-xGdxFeO3 was studied. Phase composition and structure of the obtained samples were investigated by Xray
diffraction. It turns out that the Bi1-xGdxFeO3 solid solutions with x = 0.05 and 0.07 crystallize in trigonal
structure characteristic of BiFeO3 compound. For the sample with x = 0.1, beside the major trigonal phase,
6% of orthorhombic phase typical for GdFeO3 was detected. Hyperfine interaction parameters were studied by
Mössbauer spectroscopy. Mössbauer results proved that the spin cycloid characteristic of BiFeO3 compound
gradually disappears when substituting Gd3+ ions at the Bi3+ sites.
