Abstract
The αCo (Hexagonal close packed structure, HCP) and βCo (Face centred cubic structure, FCC stable after 417°C) co-exists in Co-Ni magnetic alloy film deposited over stainless steel substrate, by galvanostaticpulsed electrodeposition method. FEG-SEM images reveal Polyhedral crystallite over sample surface exposed to the electrolyte. X-ray diffraction (XRD) and x-ray photoelectron spectroscopy (XPS) study confirm Co-Ni alloy formation at room temperature. XRD patterns confirm the co-existence of FCC (110) Co, HCP (220) Co and FCC (220) Ni, which in turn reproduced in anisotropic nature of magnetic curve Parallel and Perpendicular to the applied magnetic field. Differential Scanning Calorimetric (DSC) shows that high concentration Co88Ni12 alloy film is thermally stable up to 450°C.
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