Sonochemical synthesis and chracterization of Mn3O4 nanoparticles


Baykal A., Kavas H., Durmus Z., Demir M., Kazan S., Topkaya R., ...Daha Fazla

CENTRAL EUROPEAN JOURNAL OF CHEMISTRY, cilt.8, ss.633-638, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 8 Konu: 3
  • Basım Tarihi: 2010
  • Doi Numarası: 10.2478/s11532-010-0037-8
  • Dergi Adı: CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
  • Sayfa Sayıları: ss.633-638

Özet

We report on the synthesis of Mn3O4 nanoparticles (NPs) using a novel sonochemical method without requiring any pH adjustment. Synthesized material was identified as tetragonal hausmannite crystal structure model of Mn3O4 from XRD analysis. Crystallite size was estimated from x-ray line profile fitting to be 17 +/- 5 nm. FTIR analysis revealed stretching vibrations of metal ions in tetrahedral and octahedral coordination confirming the crystal structure. TEM analysis revealed a dominantly cubic morphology of NPs with an average size of similar to 20 nm. Magnetic evaluation revealed a blocking temperature, T-B of 40 K above which the material behaves paramagnetic. Asymmetric coercive field is attributed to the interaction between ferromagnetic Mn3O4 and antiferromagnetic Mn oxide at the surface of nanoparticles.