Fe 3 O 4 multi-granule nanocluster-multiwall carbon nanotube composites for microwave absorbing applications are fabricated by the surface-engineered tape-casting method. The multi-granule nanoclusters are synthesized by a modified polyol hydrothermal method and characterized by transmission electron microscopy, X-ray diffraction and vibrating sample magnetometer. The complex permittivity and permeability of the composites with different granule size of nanoclusters are characterized in X-band range with the reflection method. The absorption peak of the composites are shifted from 11.1GHz to 11.51GHz as granule size increased from 18nm to 35nm.
Bibliographical noteFunding Information:
Choi acknowledges the financial support of the Takreer Research Center Smart Sensor Program from the Takreer Research Center (No. EX2016-000016). Kim received financial support from the Nano & Material Technology Development Program through the National Research Foundation of Korea (No. 2014M3A7B4052193) and the Ministry of Trade, Industry and Energy of Korea under Industrial Technology Innovation Program (No. 10080408). Ryu was supported by the new faculty start-up fund of the North Carolina State University.
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- Microwave absorption
- carbon nanotube
- reflection loss
ASJC Scopus subject areas
- Materials Science(all)