ACTA

X-ray Diffraction and ⁵⁷Fe Mössbauer Spectroscopy Studies of Co-Doped AgFeO₂

K. Siedliska^a, T. Pikula^a, W. Franus^b, E. Jartych^a
^aLublin University of Technology, Institute of Electronics and Information Technology, Nadbystrzycka 38A, 20-618 Lublin, Poland
^bLublin University of Technology, Department of Geotechnics, 20-618 Lublin, Nadbystrzycka 40, Poland

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Delafossite AgFe_1-xCo_xO₂ (x=0, 0.05, 0.1, 0.2) powders were synthesized by co-precipitation method. The structural analysis and hyperfine interactions investigations were performed by X-ray diffraction and the Mössbauer spectroscopy. It was found that the Co-doped delafossite phase with traces of metallic silver was obtained. The investigated samples were fine powders which are typical of the materials synthesized by co-precipitation. The Mössbauer spectroscopy studies revealed random incorporation of cobalt ions into the crystalline lattice of delafossite. Doping of cobalt ions caused the distortion of the oxygen octahedra in AgFeO₂ which was observed in the increase of the quadrupole splitting value.

DOI:10.12693/APhysPolA.134.1040
PACS numbers: 81.05.-t, 61.05.cp, 76.80.+y, 31.30.Gs