Untitled

Surfactant-Assisted Preparation and Magnetic Properties of Iron-Based Nanowires

“…11) The similarly oriented growth of an ironbased compound (-Fe 2 O 3 ) with sodium dodecyl sulfate as a surfactant has been reported by Wang et al 12) The aspect ratio of such -Fe 2 O 3 nanorods is, however, lower than that of our present Fe 7 C 3 nanowires, probably owing to the low crystal anisotropy of cubic -Fe 2 O 3 . Fe 7 C 3 is a ferromagnetic material with a Curie temperature of $250 C, 13,14) so that nanowire particles can be aligned by magnetic field to evaluate the crystal growth anisotropy. The easy growth direction of our present nanowires was consequently found to be (102), as shown in Fig.…”