Electrochemical synthesis of Fe-W and Fe-W-P magnetic amorphous films and Fe-W nanowires

• Published in: Surface & coatings technology Vol. 324; pp. 80 - 84
• Main Authors: Barbano, E.P., Carlos, I.A., Vallés, E.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 15.09.2017; Elsevier BV
• Subjects: Alloys; Amorphous alloys; Carbon; Codeposition; Deposits; Ferrous alloys; Induced co-deposition; Iron; Iron-tungsten films and nanowires; Magnetic binary and ternary iron alloys; Magnetic properties; Nanowires; Nitrilotriacetic acid; Tungsten; Magnetic binary and ternary iron alloys; Induced co-deposition; Iron-tungsten films and nanowires; Amorphous alloys
• ISSN: 0257-8972; 1879-3347
• DOI: 10.1016/j.surfcoat.2017.05.071

Binary and ternary Fe-W and Fe-W-P films have been obtained electrochemically by using an alkaline stable bath of Fe(III) with a new complexing agent (nitrilotriacetic acid trisodium salt monohydrate-NTA), adequate to avoid carbon incorporation in the deposits and assure the bath durability. The different stages to obtain the alloy deposits through induced co-deposition have been proposed. Significant tungsten percentages in the deposits have been obtained, resulting stable amorphous films with soft-magnetic properties. However, it has been necessary to simplify the deposition process to obtain Fe-W alloy nanowires by means of induced co-deposition in the interior of polycarbonate membranes. For first time, Fe-W magnetic nanowires have been synthesised by templated induced co-deposition. [Display omitted] •FeW nanowires obtained for the first time by electrodeposition.•Binary FeW and ternary FeWP amorphous films from a new environmentally friendly electrolytic bath•Control of the induced codeposition in films and nanowires•Tuneable magnetic properties of films and nanowires as a function of the W percentage