Synthesis and Characterization of Dumbbell-Like Nickel Nanostructures

Abstract

Dumbbell-like nickel nanostructures was fabricated through a simple, efficient and one pot solvothermal approach with hydrazine hydrate as reducing agent. The phase structure, morphology and magnetic properties of the as-prepared product were extensively characterized by X-ray diffraction, atomic force microscopy and superconducting quantum interference device magnetometer. X-Ray diffraction pattern indicated that the as-synthesized product was nickel with well-crystallized face-centered cubic structure. AFM observation showed that the nickel product consists of dumbbell-like shape with size around 350 nm. Magnetic measurements revealed that the coercive force of nickel product at 300 K is 200 Oe. Compared with bulk nickel, the dumbbell-like nickel nanostructures exhibit significant increase in coercive force owing to shape anisotropy.