Nickel hierarchical microstructures have been synthesized from the reduction of nickel hydrazine complexes by a simple hydrothermal method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and superconducting quantum interference device (SQUID). The results indicated that the Ni hierarchical microstructures are face-centered cubic phase with a size of 2–3 μ for a single hierarchical microstructure while some thick petals with a length in the range of 0.5–1.5 μ extrude around the surface. The value of coercivity reached 121 Oe at room temperature, which is vastly superior to that of bulk nickel. Parallel experiments showed that the hydrothermal reaction time and the presence of surfactant cetyltrimethylamonium bromide (CTAB) played important roles in the formation of such hierarchical morphology.

通过简单的水热法从镍肼配合物的还原中合成了镍的分层微观结构。通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和超导量子干涉仪（SQUID）对样品进行表征。结果表明，Ni层级微观结构是面心立方相，单个层级微观结构的大小为2–3μ，而一些厚花瓣在表面周围突出，长度为0.5–1.5μ。室温下的矫顽力值达到121 Oe，大大优于块状镍。