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Investigations on Controlled‐Size‐Precipitated Cobalt Ferrite Nanoparticles
Author(s) -
Kumar Vinod,
Rana Anu,
Kumar Nitu,
Pant Rajendra P.
Publication year - 2009
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2009.02412.x
Subject(s) - materials science , coprecipitation , diffractometer , nanocrystalline material , crystallite , thermogravimetric analysis , particle size , thermomagnetic convection , cobalt , nanoparticle , ferrite (magnet) , magnetization , analytical chemistry (journal) , nuclear magnetic resonance , chemical engineering , scanning electron microscope , composite material , nanotechnology , metallurgy , chemistry , physics , chromatography , quantum mechanics , magnetic field , engineering
Size‐dependent nanocrystalline cobalt ferrite (CoFe 2 O 4 ) particles have been synthesized by coprecipitation and investigated in detail. The effects of reducing the particle size on physical properties like crystalline phase, crystallite size, lattice strain, IR absorption, thermomagnetic measurements, and magnetization parameter are studied. Structural parameters in relevance to the shape and size of nanoparticles are discussed. The crystalline phase of cobalt ferrite remains stable down to 5 nm. Size‐dependent magnetization and the effect of surface area are presented. Characterization of samples has been performed using X‐ray diffractometer, transmission electron microscope, Fourier transform infrared spectrophotometer, vibrating sample magnetometer, and thermogravimetric analysis techniques.