Enhanced microwave absorption properties of rod-shaped Fe 2 O 3 /Fe 3 O 4 /MWCNTs composites
| Autor: | Ronghai Yu, Xiaofang Liu, Lina Huang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Permittivity
Materials science Composite number Reflection loss 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation 0104 chemical sciences Permeability (electromagnetism) Absorption band General Materials Science Absorption bandwidth Composite material 0210 nano-technology Microwave |
| Zdroj: | Progress in Natural Science: Materials International. 28:288-295 |
| ISSN: | 1002-0071 |
| Popis: | A novel type of composite absorber, i.e. Fe2O3/Fe3O4/MWCNTs composites (0%, 1.7% and 5% MWCNTs), with microwave absorption properties was successfully fabricated by a facile hydrothermal method. The prepared α-Fe2O3/Fe3O4 nanoparticles displayed rod-shaped morphology. The complex permittivity and permeability of the Fe2O3/Fe3O4/MWCNTs composites distinctly increased, furthermore, with the introduction of MWCNTs, the Fe2O3/Fe3O4/MWCNTs composites exhibited fine microwave absorption performance with strong absorption and wide absorption band. In particular, for Fe2O3/Fe3O4/1.7% MWCNTs composite with an absorber thickness of 2.5 mm, the reflection loss (RL) reached a minimum of −44.1 dB at 10.4 GHz and the effective absorption bandwidth (RL |
| Databáze: | OpenAIRE |
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