Low-Temperature Magnetic Properties of Nanocomposites Containing Superpara-magnetic Fe3C Particles |
| B. Davida, O. Schneeweissa, E. Šantaváb and I. Morjanc
aInstitute of Physics of Materials, AS CR, Žižkova 22, CZ-61662 Brno, Czech Republic bInstitute of Physics, AS CR, Na Slovance 2, CZ-18221 Praha 8, Czech Republic cNational Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG-36, 077125 Bucharest, Romania |
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| Two nanopowders containing superpara-magnetic Fe3C particles, superpara-magnetic Fe3O4/γ-Fe2O3 particles and carbon black phase were synthesised by the method of laser-induced homogeneous pyrolysis of gaseous precursors. Both were characterised by X-ray diffraction, Mössbauer spectrometry and standard magnetic measurements. The mean crystallite size of Fe3C was 3 nm for the first sample and 10 nm for the second sample. Mössbauer spectra measured at 27 K and zero-field cooled/field cooled curves measured down to 4 K are reported. |
| DOI: 10.12693/APhysPolA.118.766 PACS numbers: 81.07.Wx, 75.50.Bb, 75.75.-c |