Preparation of FeCo/Cu Core Shell Magnetic Nanoparticles

Shilabati Hembram, Angshuman Sarkar, Amitava Basu Mallick, Pritam Deb

Abstract


FeCo/Cu core shell structure with FeCo as a core and
copper as the shell has been successfully synthesized by
displacement reaction. The morphology, grain size, lattice strain,
and magnetic properties of all the samples were examined by
using transmission electron microscopy (TEM), X-ray diffraction
(XRD), and vibrating sample magnetometer (VSM). Annealing
temperatures and its effect on magnetic properties of the
FeCo/Cu core shell particles was investigated. A maximum
coercivity (Hc) of 398.84 Oe was recorded for the sample heat
treated in magnetic field. The blocking temperatures (TB) and
squareness (Mr/Ms) of the sample gradually increased due to the
influence of temperature and magnetic field.


Keywords


Core/shell; FeCo alloy; displacement reaction; coercivity; blocking temperature; squareness; TEM; VSM

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