以淀粉为炭基质,硝酸镍为金属纳米颗粒前躯体,在氢气保护下进行控温炭化制备出准球形的碳包覆Ni纳米颗粒,采用HRTEM、EDX和XRD对产物进行表征,纳米颗粒呈核壳结构,粒径分布比较窄,金属颗粒为单晶Ni.通过波导法对所制备的碳包覆Ni纳米材料电磁性能进行分析,采用矢量网络仪测试分析其在18～26.2GHz频率范围内电磁参数,并阐述材料结构与电磁性能之关联.
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