We described a new method to fabricate Fe−Pt binary alloy nanomaterials (nanocrystalline thin films and nanowire arrays embedded in porous alumina films) through a direct current electrodeposition in a novel bath with a simple composition on a glass substrate covered with a tin-doped indium oxide (ITO) film. The morphology and compositions of the Fe−Pt alloy films/nanowires are investigated by FESEM with an EDX analyzer, and the crystallographic structures of the two Fe−Pt nanomaterials were determined by XRD and HRTEM. Uniform Fe−Pt alloy films with bright appearance and controllable compositions in 14−90 atom % Fe were achieved on copper and ITO/glass within a broad current density range from 20 to 400 A/m 2 . The Fe−Pt nanowires (φ ≈ 50 nm) embedded in anodic alumina films on ITO/glass were dense and parallel, with a high pore-filling of ≈95%, giving a high wire density of ≈4.7 × 10 14 wire/m 2 . In particular, the Fe−Pt films and nanowires with a composition close to 1:1 Fe/Pt were polycrystalline with crystal sizes of 15−20 nm (films) and 3−6 nm (wires) across, which were identified to be cubic (Pt, Fe) phase with a lattice constant a = 3.816 Å.
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Kure‐Chu et al. (2004) studied this question.
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