Abstract
We fabricated a metallic nickel with an electrical anisotropy by alignment of nanowires. It is found that the electrical anisotropy of the metallic nickel can be effectively modulated by the geometric configuration of nanowires, which can be tuned by the concentration of Ni2+ and the strength of the external magnetic field, respectively. The ratio of resistivity between perpendicular and parallel direction for the metallic nickel is optimized to be 2.03, when the nanowires are synthesized at a condition that the concentration of Ni2+ is 0.05 M assisted by an external magnetic field. This work provides a path for producing anisotropic metals, which could have potential applications in areas such as thermoelectricity or thermal spintronics.
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