TY - JOUR
T1 - Fabrication and characteristics of ordered Ni nanostructures on glass by anodization and direct current electrodeposition
AU - Chu, Song Zhu
AU - Wada, Kenji
AU - Inoue, Satoru
AU - Todoroki, Sin ichi
AU - Takahashi, Yukiko K.
AU - Hono, Kazuhiro
PY - 2002/11/1
Y1 - 2002/11/1
N2 - A novel process for fabrication of metal nanostructure arrays directly on glass substrates is described. An aluminum film was sputter-deposited on a glass substrate coated with a tin-doped indium oxide (ITO) film. The films were then anodically oxidized to obtain a porous alumina template, with pore diameters ranging from 5 to 150 nm, which was used as a template-electrode in a direct current electrodeposition to fabricate various nickel nanowires (Ø 18-180 nm, 0.5-2.6 μm long) in the nanopores. The porous alumina films not only define the dimensions of the nanowires but also influence the crystalline orientation. The magnetic hysteresis measurement showed that the Ni nanowire arrays have significant magnetic anisotropy proportional to their aspect ratios. The coercivity (Hc) and the squareness (Mr/Ms) perpendicular to the substrates were 1025 Oe and 0.74 for the Ni nanowires of Ø 50 nm (1.8 μm), and 830 Oe and 0.94 for the Ni nanowires of Ø 18 nm (1.2 μm), respectively.
AB - A novel process for fabrication of metal nanostructure arrays directly on glass substrates is described. An aluminum film was sputter-deposited on a glass substrate coated with a tin-doped indium oxide (ITO) film. The films were then anodically oxidized to obtain a porous alumina template, with pore diameters ranging from 5 to 150 nm, which was used as a template-electrode in a direct current electrodeposition to fabricate various nickel nanowires (Ø 18-180 nm, 0.5-2.6 μm long) in the nanopores. The porous alumina films not only define the dimensions of the nanowires but also influence the crystalline orientation. The magnetic hysteresis measurement showed that the Ni nanowire arrays have significant magnetic anisotropy proportional to their aspect ratios. The coercivity (Hc) and the squareness (Mr/Ms) perpendicular to the substrates were 1025 Oe and 0.74 for the Ni nanowires of Ø 50 nm (1.8 μm), and 830 Oe and 0.94 for the Ni nanowires of Ø 18 nm (1.2 μm), respectively.
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U2 - 10.1021/cm020272w
DO - 10.1021/cm020272w
M3 - Article
AN - SCOPUS:0036853911
SN - 0897-4756
VL - 14
SP - 4595
EP - 4602
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 11
ER -