Structural, optical, and magnetic properties of Mn and Fe-doped Co3O4 nanoparticles | Zendy

Chelladurai Stella | Zendy; N. Soundararajan | Zendy; K. Ramachandran | Zendy

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Structural, optical, and magnetic properties of Mn and Fe-doped Co3O4 nanoparticles

Author(s) -

Chelladurai Stella,

N. Soundararajan,

K. Ramachandran

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4928218

Subject(s) - raman spectroscopy , analytical chemistry (journal) , materials science , fourier transform infrared spectroscopy , scanning electron microscope , doping , spectroscopy , transmission electron microscopy , absorption spectroscopy , infrared spectroscopy , spinel , nanoparticle , nuclear magnetic resonance , chemistry , optics , nanotechnology , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics , metallurgy , composite material

Mn and Fe-doped Co3O4 nanoparticles were prepared by a simple precipitation method. The synthesized particles were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and vibrating sample magnetometer (VSM) techniques. XRD analysis showed the cubic structure of Co3O4. SEM and TEM images confirmed the formation of interconnected nanoparticles. Mn and Fe-doped Co3O4 showed broad absorption in the visible region compared to undoped sample and the band gap values are red shifted. Five Raman active modes were observed from the Raman spectra. FTIR spectra confirmed the spinel structure of Co3O4 and the doping of Mn and Fe shifts the vibrational modes to lower wave number region. The magnetic measurements confirmed that Fe-doped Co3O4 shows a little ferromagnetic behavior compared to undoped and Mn-doped Co3O4, which could be related to the uncompensated surface spins and the finite size effects

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