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(a) X-ray diffraction patterns of Fe nanowire arrays. The inset shows a transmission electron microscopy image of 20-nm-diam Fe nanowire after removing from the template. (b) Hysteresis loops of Fe nanowire arrays at 10 K. indicates the magnetic field applied parallel to the nanowire axis. denotes perpendicular to the wire axis.
Mössbauer spectra of Fe nanowire arrays in AAO films at 10 K with various magnetic fields applied perpendicular to the nanowire axis.
(a) A graph of average vs applied field , comparing with the magnetization curve of Fe nanowire arrays. (b) The effective field for Fe nanowire arrays as a function of the applied field . The dots and dashed lines are experimental and fitting results, respectively. The magnetic field is parallel and perpendicular to the nanowire axis, respectively.
Schematic diagram of the chain-of-spheres domain structure of a single magnetic nanowire, and the spin-flip in external field.
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