
Magnetic Properties Hard-Soft SmCo5-FeNi and SmCo5-FeCo Composites Prepared by Electroless Coating Technique 123
ity reduction is explained on the bases of increased
amount of magnetic softness of the coated layer. An in-
dependently tuning the size and composition of the indi-
vidual building blocks of the composite is necessary in
order to enhance exchange coupling between hard-soft
phases of the composite. It is expected that composite
magnets of SmCo5-FeNi or FeCo could be obtained with
core-particles’ coercivity exceeding 10 kOe, which can
be attained either via ball milling technique [21-23] or
wet-chemical method [24]. It is also evident from the
present study that the growth rate of soft magnetic layer
needs to be better controlled in order to form a fine uni-
form coating of a few nanometer thicknesses on core
particles to meet the theoretical exchanges spring inter-
action length limit.
5. Acknowledgements
This work was supported by DMR NSF-EAGER, Grant
#0965801.
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