Synthesis and characterization of FeGa nanowires.

Autor: Battogtokh, Jugdersuren, Kang, Sungmu, Chao, Yan, Wagner, Michael J., Brandys, Marek, Buechele, Andrew C., Pegg, Ian L., Philip, John
Předmět:
Zdroj: Journal of Applied Physics; Apr2009, Vol. 105 Issue 7, p07A933-07A936, 3p, 3 Graphs
Abstrakt: We report the growth, structural characterization, and magnetic properties of ferromagnetic Fe0.8Ga0.2 nanowires that are grown on quartz substrates by electrospinning. Electrospun nanowires are annealed in ultrahigh purity argon-hydrogen gas mixture. Uniform, continuous, high aspect ratio FeGa nanowires with diameters in the range of 50–500 nm and lengths of up to 500 μm are grown. Hysteresis loops were measured with magnetic field applied perpendicular and parallel to the substrate plane at 4 and 300 K. The nanowires exhibit a quite large coercivity (380 Oe) at 4 K in the parallel field. At 300 K, they show lower coercivities than that of bulk FeGa in both directions. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index