Preparation and characterization of La-Co alloy nanowire arrays by electrodeposition in AAO template under nonaqueous system
(1. College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China;2. College of Material, Shenzhen Key Laboratory of Special Functional Materials, Shenzhen University,Shenzhen 518060, China)
Abstract: La-Co alloy nanowires can be made in pulse reversal current(PRC) and direct current(DC) electrodepositions under nonaqueous system, with the porous anodic aluminum oxide(AAO) as template. This membrane is subject to the dual-oxidation (two-step) anodizing. Scanning electron microscope(SEM) examination shows that all of the nanowires have uniform diameter about 200 nm, and their diameters are determined by the pore diameter of applied AAO template. X-ray energy dispersion analysis indicates that the chemical composition of La and Co elements is very close to 1׃2 in stoichiometry. X-ray diffraction pattern investigation demonstrates that La-Co nanowire is the face-centered cubic(FCC) LaCo13.
Key words: La-Co alloy; nanowire arrays; electrodeposition; AAO template