title: Growth of single-crystalline Ni and Co nanowires via electrochemical deposition and their magnetic properties.
abstract: Single-crystalline Ni nanowires have been successfully fabricated with anodic aluminum oxide as template by electrodeposition. Structural characterization (X-ray diffraction, XRD, and high-resolution transmission electron microscopy, HRTEM) shows that the single-crystalline Ni nanowire has a preferred orientation along the [220] direction. The effects of electrochemical deposition conditions on the structure of Ni nanowires are systematically studied to investigate the growth mechanism. Possible reasons for the growth of the single-crystalline Ni nanowires were discussed on the basis of electrochemistry and thermodynamics. These single-crystalline Ni nanowires have exhibited excellent magnetic properties (large anisotropy, large coercivity, and high remanence). By a similar process, single-crystalline Co nanowires with hexagonal close-packed (hcp) structure were achieved, also having large anisotropy, large coercivity (1.8 kOe), and high remanence ratio (80.8%).
authors.affiliation: Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542.
authors.forename: Hui
authors.initials: H
authors.lastname: Pan
authors.forename: Binghai
authors.initials: B
authors.lastname: Liu
authors.forename: Jiabao
authors.initials: J
authors.lastname: Yi
authors.forename: Cheekok
authors.initials: C
authors.lastname: Poh
authors.forename: Sanhua
authors.initials: S
authors.lastname: Lim
authors.forename: Jun
authors.initials: J
authors.lastname: Ding
authors.forename: Yuanping
authors.initials: Y
authors.lastname: Feng
authors.forename: C H A
authors.initials: CH
authors.lastname: Huan
authors.forename: Jianyi
authors.initials: J
authors.lastname: Lin