Sonochemical synthesis and chracterization of Mn3O4 nanoparticles

Abdulhadi Baykal, Hüseyin Kavas, Zehra Durmuş, Mine Demir, Sinan Kazan, Ramazan Topkaya, Muhammet Toprak
2010 Open Chemistry  
AbstractWe 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
more » ... aled a dominantly cubic morphology of NPs with an average size of ∼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.
doi:10.2478/s11532-010-0037-8 fatcat:xseazpxpkjaylibylaeqha2ifi