Abstract
Diluted magnetic semiconductors Zn 1 − x Ni x O nanorods with nominal Ni doping concentrations of x = 0%, 1%, 5%, and 10% have been synthesized by a simple hydrothermal route. XRD and high-resolution TEM characterizations indicated that the as-prepared samples were single-crystalline wurtzite structure and no metallic Ni or other secondary phases were found in the nanorods. The field dependence of magnetization ( M– H curve) measured at room temperature exhibited the obvious ferromagnetic characteristic. The saturation magnetization and coercive field ( H C) were obtained to be 0.4 emu/g and ∼ 72 Oe for ZnO 0.95Ni 0.05O nanorods. The room-temperature ferromagnetism of the synthesized Zn 1 − x Ni x O nanorods makes them potentially useful as build components for spintronic devices.
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