Abstract
Rugby-shaped CoFe2O4/graphene composites were synthesized using a vapor diffusion method in combination with calcination. The morphologies and structures of the products were characterized by field emission scanning electron microscopy, X-ray diffractometer, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The magnetic and electromagnetic parameters were measured using a vibrating sample magnetometer and a vector network analyzer, respectively. Results show that rugby-shaped CoFe2O4 particles are distributed on graphene sheets. A minimum reflection loss (RL) of -39.0 dB is observed at 10.9 GHz for the sample with a thickness of 2.0 mm, and the effective absorption frequency (RL < -10 dB) ranges from 9.6 to 14.3 GHz, indicating the excellent microwave absorption performance of the products. The absorbing performance of the CoFe2O4 rugbies/graphene composites is better than that of the CoFe2O4 nanoparticles/graphene composites.
Original language | English |
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Pages (from-to) | 195-201 |
Number of pages | 7 |
Journal | Journal of Alloys and Compounds |
Volume | 630 |
DOIs | |
Publication status | Published - 5 May 2015 |
Keywords
- Absorbing performance
- Cobalt ferrite
- Graphene
- Rugby shape
- Vapor diffusion method