期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 649, 期 -, 页码 537-543出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.07.084
关键词
Microwave absorption; Fe3O4/C nanosheets; Interfacial polarization
资金
- National Basic Research Program of China [2012CB933103]
- National Natural Science Foundation of China [51171158, 51371154, 51301145]
- Fundamental Research Funds for the Central Universities [20720140547]
- Natural Science Foundation of Fujian Province of China [2014J05009]
2-D Fe3O4/C composite materials were synthesized simultaneously through a single heating procedure using sodium chloride salt powder as a sacrificial template. Electromagnetic parameters of composite were measured by a vector network in the range of 2-18 GHz. The obtained composite materials have excellent electromagnetic wave absorption properties. The maximum value of reflection loss of Fe3O4/C-1.0 is -46 dB at 12.8 GHz when the thickness of absorber adjusts to 2.9 mm and the absorbing bandwidth exceeded -10 dB in a broad range from 10.3 to 17.1 GHz. Moreover, the effect of amorphous carbon and magnetite on microwave absorption properties had been studied, respectively. The relationship between the RL peak frequency and the absorber thickness was successfully explained by the quarter-wavelength cancellation. (C) 2015 Elsevier B.V. All rights reserved.
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