Synthesis and Vibration Spectroscopy of Nano-Sized Manganese Oxides

N. Mironova-Ulmanea, A. Kuzmin a, V. Skvortsova a, G. Chikvaidze a, I. Sildos b, J. Grabis c, D. Jankoviča c, A. Dindune c and M. Maiorov d aInstitute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV-1063 Riga, Latvia bInstitute of Physics, University of Tartu, W. Ostwaldi tn 1, 50411 Tartu, Estonia cInstitute of Inorganic Chemistry, Riga Technical University, P. Valdena Str. 3/7, LV-1048 Riga, Latvia dInstitute of Physics, University of Latvia, Miera Str. 32, LV-2169 Salaspils, Latvia

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X-ray diffraction, micro-Raman and the Fourier transform: infrared spectroscopies as well as magnetometry measurements were performed on nanosized manganese oxides to probe their phase composition and magnetic properties. It was shown that the XRD method is less sensitive to phase composition of manganese oxide samples than spectroscopic methods. While in some samples the XRD method recognised only the manganosite MnO phase, the Raman and FT-IR methods revealed additionally the presence of the hausmannite Mn3O4 phase.

DOI: 10.12693/APhysPolA.133.994 PACS numbers: 81.07.Wx, 61.05.cp, 78.30.Hv, 75.30.Cr