Size-controlled high magnetization CoFe2O4 nanospheres and nanocubes using rapid one-pot sonochemical technique

Mohamed Abbas, B. Parvatheeswara Rao, Md Nazrul Islam, Kun Woo Kim, S. M. Naga, Migaku Takahashi, Cheolgi Kim

    Research output: Contribution to journalArticlepeer-review

    60 Citations (Scopus)


    Highly crystalline single phase spherical and monodisperse cobalt ferrite (CoFe2O4) nanoparticles (NPs) with uniform shape and size distribution have been synthesized by one pot-rapid sonochemical method. The effect of different solvents, such as aqueous, alcoholic, and a mix of water/ethanol in 1:1 volume ratio on the shape, size, and crystalline structure of CoFe2O4 NPs were studied using X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy and Fourier transform infrared spectroscopy. The size of CoFe2O4 nanoparticle was controlled in the range from 20 to 110 nm based on the solvent medium used in the synthesis process. Furthermore, the evolution from spherical to cubic morphology of cobalt ferrite NPs is achieved by simply changing the solvent medium from aqueous to alcoholic medium. The magnetic properties of all the synthesized CoFe2O4 NPs were studied by vibrating sample magnetometer (VSM) at room temperature. The magnetization value was found to be particle size dependent, and high magnetization (Ms) of 92.5 emu/g was obtained for the CoFe2O4 NPs sample synthesized in a mixed solution of water and ethanol. A possible reaction mechanism for the formation of cobalt ferrite NPs by the sonochemical technique was discussed. The facile method adopted in our study appears to be a promising route for synthesis of highly crystalline nanoparticles within short times and without the need for using any calcination process.

    Original languageEnglish
    Pages (from-to)3269-3276
    Number of pages8
    JournalCeramics International
    Issue number2
    Publication statusPublished - 2014 Mar


    • C. Magnetic properties
    • Cobalt ferrite (CoFeO)
    • Monodisperse
    • Sonochemical method

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Ceramics and Composites
    • Process Chemistry and Technology
    • Surfaces, Coatings and Films
    • Materials Chemistry


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