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Ni−Pt Multilayered Nanowire Arrays with Enhanced Coercivity and High Remanence Ratio

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journal contribution
posted on 02.05.2005, 00:00 by Han-Pu Liang, Guo, Jin-Song Hu, Chuan-Feng Zhu, Li-Jun Wan, Chun-Li Bai
Highly ordered Ni−Pt multilayered nanowire arrays have been fabricated using a porous anodic aluminum oxide (AAO) template by pulse electrodeposition. The cylindrical Ni nanoparticles with different lengths and diameters in these arrays were characterized by transmission electron microscope (TEM) and alternating-gradient magnetometer (AGM) measurements. Magnetization measurements revealed that an array of such nanowires with 20-nm diameters has an enhanced coercivity (ca. 1169 Oe) and a high remanence ratio (ca. 0.96).