124-130The copper based
CuFe2O4 nanoferrite was prepared by chemical
co-precipitation method and the detailed investigation of structural and
magnetic properties was carried out successfully at room temperature. The
obtained results from XRD confirm that CuFe2O4 has
tetragonal structure at room temperature and its crystallite size, lattice
strain was found to be varied from 11 to 17 nm and <span style="mso-bidi-font-weight:
bold">3.910-2 to 2.610-2 for microwave annealed to
as-prepared samples calculated using Scherrer equation
and Williamson-Hall analysis, respectively. A clear superparamagnetic behaviour
was observed in as-prepared and hot air oven annealed nanoferrite samples at RT
under the field range of ±2 T. A distorted superparamagnetic curve was
determined from isothermal magnetic hysteresis studies for the microwave oven
annealed sample. It might be a possible magnetic and non-magnetic cation transformation
on the surface of CuFe2O4 nanoparticles along with high
lattice strain resulting in change of magnetic properties under certain level
of applied magnetic field.
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