Controlled synthesis and magnetic properties of Ni nanotubes and nanowires
Controlled synthesis and magnetic properties of Ni nanotubes and nanowires
复制标题
Ni纳米管和纳米线的可控合成及其磁性能
DOI:
10.1016/j.materresbull.2017.07.044
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发表时间:
2017-11
影响因子:
5.4
通讯作者:
张新伟
中科院分区:
文献类型:
--
作者:
张新伟
Ni nanotubes and nanowires with an average diameter of about 140 nm are synthesized by a template-assisted sol-gel autocombustion method using nickel nitrate, citric acid and ammonia as the starting materials. The anodic aluminum oxide templates are prepared by a facile anodizing method. By adjusting the experimental conditions in the sol-gel process, the final products having tubular or wire-like morphologies can be perfectly controlled. Transmission electron microscope characterization indicates that the Ni nanotubes are very friable and can be easily broken into pieces of short nanotubes, but the Ni nanowires are compact and have very high aspect ratios. Magnetic measurements indicate that both the Ni nanowires and the Ni nanotubes possess superparamagnetism at room temperature.
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