Abstract
Supersaturated Cu 80Fe 10Co 10 alloy with a grain size of about 20 nm confirmed by X-ray diffraction was prepared by mechanical alloying from Cu, Fe and Co (−80 mesh, 99.9%) powders. Both room temperature field-dependent and temperature-dependent (FC and ZFC) DC magnetization data, and temperature-dependent AC susceptibility data measured at various frequencies hint at the simultaneous presence of ferromagnetic and superparamagnetic clusters in this alloy. Room temperature Mössbauer results suggest that the Fe atoms are located in a paramagnetic environment, thus the magnetic clusters should be composed mainly of Co atoms.
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