Electrochemical fabrication and magnetic properties of Fe7Co3 alloy nanowire array

• Published in: Journal of materials science Vol. 46; no. 7; pp. 2379 - 2383
• Main Authors: Yang, Jian, Cui, Chunxiang, Yang, Wei, Hu, Bing, Sun, Jibing
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.04.2011; Springer Nature B.V
• Subjects: Aluminum oxide; Anisotropy; Aqueous solutions; Arrays; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Crystal growth; Crystallography and Scattering Methods; Direct current; Electrochemical fabrication; Iron chlorides; Magnetic anisotropy; Magnetic materials; Magnetic properties; Magnetic saturation; Magnetism; Magnetization; Materials Science; Nanocomposites; Nanomaterials; Nanostructure; Nanowires; Polymer Sciences; Solid Mechanics; Anodic Aluminum Oxide Template; Oxalic Acid Solution; High Saturation Magnetization; Prefer Growth Direction; Anodic Aluminum Oxide
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-010-5085-0

A new type of magnetic material, Fe 7 Co 3 nanowires, was successfully synthesized for the first time via a simple electrodeposition method. Highly uniform, self-ordered porous anodic aluminum oxide (AAO) membranes were prepared by the way of electrochemical. Fe 7 Co 3 alloy nanowire arrays were fabricated in the porous alumina template in an aqueous solution of FeCl 2 and CoCl 2 by direct current electrodepositing. The microstructures of nanowires and AAO template were characterized by XRD, SEM, and TEM. The results show that a single Fe 7 Co 3 nanowire is 40 nm in width and 2.5 µm in length with a preferred crystal face (110) during growing. The Fe 7 Co 3 nanowire arrays have uniaxial magnetic anisotropy with easy magnetization direction along the nanowire axis due to the large shape anisotropy. It also shows that Fe 7 Co 3 nanowire is a well-soft magnetic phase compared with Fe nanowires. It illustrates that Fe 7 Co 3 possess higher saturation magnetization.