Abstract
We have prepared Co-Pd and Fe-Pd alloy films by galvanostatic electrodeposition from alkaline baths containing metal sulfates and 5-sulfosalicylic acid onto copper and titanium substrates. Both as-deposited Co-Pd and Fe-Pd alloy films were amorphous or nanocrystalline and magnetically soft. Deposition current density enables control over the film composition in a wide range. Post-deposition thermal annealing in (N2 + 5% H2) ambient was carried out to detect the formation of any chemically ordered phase and improvement in magnetic properties. The Co-Pd films after annealing were still amorphous and magnetically soft for both copper and titanium substrates. Completely different behavior was observed in the annealed Fe-Pd films on titanium substrate. After suitable annealing of the as-deposited Fe-Pd films on titanium substrates, the tetragonal L10 structure was obtained as confirmed by XRD, along with hard magnetic properties with coercivities up to 1880 Oe.
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