Fabrication of Functional Metallic Nanowires Using Electrodeposition Technique

5.1 Ni, Co and Fe nanowires Optimum deposition potential region for growing Ni, Co and Fe nanowires was determined to be the range from ­0.9 to ­1.2 V. Growth rate of Ni nanowires was ca. 6 nm·sec-1 at the cathode potential of ­1.0 V. Growth rate of nanowires was increased up to around 30 nm·sec-1 with increasing cathode potential up to -1.2 V. The cylindrical shape was precisely transferred from the nanochannels to the nanowires and the aspect ratio reached up to ca. 150. The each nanowire was consisted of single crystalline domain. Basis on the uni-axial magnetic anisotropy and single magnetic domain structure of the ferromagnetic metal nanowires, the magnetic hysteresis loops showed typical perpendicular magnetization behavior and the coercive force reached up to around 1 kOe. 5.2 Ni-Fe alloy nanowires Optimum deposition potential for electrodeposition of Ni-Fe alloy is determined to be ca. ­ 1.0 V. Fe ratio in deposit was condensed more than 10 times higher than Fe2+ ratio in bath. This phenomena was explained by the anomalous codeposition mechanism due to the