Magnetic and Microwave-absorption Properties of Graphite-coated (Fe, Ni) Nanocapsules

作     者：Zhigao Xie Dianyu Geng Xianguo Liu Song Ma Zhidong Zhang 

作者机构：Shenyang National Laboratory for Materials Science Institute of Metal Research and International Centre for Material Physics Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2011年第27卷第7期

页      面：607-614页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China under Grant No. 50831006 the National Major Fundamental Research Program(Grant No. 2010CB934603) of China, Ministry of Science and Technology China 

主　　题：Magnetic Nanocapsules Microwave absorption 

摘      要：The structure, magnetic and microwave-absorption properties of graphite-coated （Fe, Ni） alloy nanocapsules, synthesized by the arc-discharge method, have been studied. High-resolution transmission electron microscopy shows that the nanocapsules have a core/shell structure with （Fe, Ni） alloy as the core and graphite as the shell. All （Fe, Ni） alloy nanocapsules/paraffin composites show good microwave-absorption properties. The optimal reflection loss （RL） was found for （Fe70Ni30）/C nanocapsules/paraffin composites, being -47.84 dB at 14.6 GHz for an absorber thickness of 1.99 mm, while the RL values exceeding -10 dB were found in the 12.4– 17.4 GHz range, which almost covers the Ku band （12.4–18 GHz）. For （Fe70Ni30）/C nanocapsules/paraffin composites, RL values can exceed -10 dB in the 11.4–18 GHz range with an absorber thickness of 1.91 mm, which cover the whole Ku band.