TEM image of FePt clusters assembled on a copper grid coated with carbon.
Histogram of cluster size distribution and fitted curve following log-normal function.
XRD patterns of the FePt cluster assembled onto the silicon oxide substrate before (a) and after (b) heating at for .
Coercivity at room temperature versus annealing temperature curve.
Hysteresis loop measured at room temperature by SQUID on a sample heated at for .
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