Abstract
The CoFe2O4 and NiFe2O4 nanoparticles were synthesized exploiting a
co-precipitation method and afterward calcinated at 400 A degrees C
through two different experimental apparatus: a conventional muffle and
rotatory oven. X-ray diffraction (XRD) analysis revealed that
nanocrystalline ferrites grew with a face center cubic structure (fcc)
and Fd3m symmetry space group. XRD, transmission electron microscopy,
and magnetic measurements confirmed the compositional homogeneity and
the narrow size particle distribution (6-8 nm) of the sample thermally
treated in a rotary oven, in all likelihood due to the sample's constant
turning movement. The size of the magnetic particles is extremely
important and influences the choice of a potential technological
application. For this reason, our study emerges as a new and simple
innovating procedure to control the size of magnetic nanoparticles.
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