Magnetic properties of one-dimensional embedded nickel nanostructures in gold nanowires |
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Authors: | S. IshratK. Maaz Rong ChenSoo Hyun Kim M.H. JungGil-Ho Kim |
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Affiliation: | a School of Information and Communication Engineering, Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, Republic of Korea b Department of Physics, Sogang University, Seoul 121-742, Republic of Korea |
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Abstract: | Magnetic nanostructures of nickel embedded in gold were successfully fabricated by electrochemical deposition in porous alumina templates. Structural characterization of the samples confirmed the formation of pure phase, crystalline multi-segmented Au-Ni-Au nanowires. Magnetic characterization of the wires reveals that ferromagnetism arises as a result of Ni embedded in Au segments. An interesting behavior of coercivity was observed that showed a rapid decrease of coercivity for smaller Ni segments while a monotonic decrease was found for the larger segments. Finally, the saturation magnetization of the wires exhibited a slower increase for smaller Ni segments while a sharp increase was observed for larger Ni segments. |
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Keywords: | Ni nanowires Electrodeposition Magnetic properties Template synthesis |
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