PEG-Assisted Synthesis of Mn3O4 Nanoparticles: A Structural and Magnetic Study

Durmus Z., Tomas M., Baykal A., KAVAS H., Toprak M. S.

SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY, cilt.41, ss.768-773, 2011 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 41 Konu: 7
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1080/15533174.2011.591302
  • Dergi Adı: SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY
  • Sayfa Sayısı: ss.768-773

Özet

We report on the synthesis of Mn3O4 nanoparticles via a polyethyleneglycol (PEG)-assisted hydrothermal route. Crystalline phase was identified as Mn3O4. The crystallite size from X-ray Diffraction (XRD) pattern and particle size from transmission electron microscopy (TEM) micrographs were calculated as 23 +/- 1 nm and 24.5 +/- 0.5 nm, respectively. Nanoparticles (NPs) exhibit mainly tetragonal and spherical morphologies. Magnetic characteristics of Mn3O4 NPs were evaluated by electron spin resonance (ESR) in the temperature range of 24-294 K and the Curie temperature was observed as 43 K. Also the magnetic phases that occur in nanosize Mn3O4 are detected below Tc by this method. The room-temperature paramagnetic characteristic are verified by vibrating sample magnetometry (VSM).