Large-scale single-crystalline CdO nanowires have been successfully fabricated from the electrochemical deposition mixture film of Cd and Te at 450°C, and characterized by x-ray diffraction (XRD) powder, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM and TEM images show that these nanowires are uniform with diameters of about 40–60 nm, length up to several tens micrometres. XRD and selected area electron diffraction analyses altogether indicate that these CdO nanowires crystallize in a NaCl cubic structure. The growth mechanism of these nanowires is also proposed as vapour–liquid–solid mechanism, in which Te serves as a liquid-forming agent.
Ordered Ni-Cu alloy nanowire arrays embedded in the hexagonally ordered
nanochannels of anodic alumina membranes (AAMs) were fabricated by
electrodeposition. The x-ray diffraction, x-ray energy dispersion spectrum,
scanning and transmission electron microscopy were utilized to characterize
the Ni-Cu alloy nanowire arrays. The results reveal that single crystalline
Ni-Cu alloy nanowires are single crystal and that the atomic composition of
Ni and Cu is very close to a 1 : 1 stoichiometry. Magnetic hysteresis loop
shows that the Ni-Cu alloy nanowire arrays embedded in AAMs have
perpendicular magnetic anisotropy, indicating their potential applications
in perpendicular magnetic recording.
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