Sonochemical synthesis and chracterization of Mn3O4 nanoparticles

Baykal A., KAVAS H., Durmuş Z., Demir M., Kazan S., Topkaya R., ...More

CENTRAL EUROPEAN JOURNAL OF CHEMISTRY, vol.8, no.3, pp.633-638, 2010 (Peer-Reviewed Journal) identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 3
  • Publication Date: 2010
  • Doi Number: 10.2478/s11532-010-0037-8
  • Journal Name: CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded
  • Page Numbers: pp.633-638

Abstract

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.