Ultra-thin ferrite nanocomposite coating as broadband microwave absorber
| Autor: | Somak Bhattacharyya, Santanu Das, Dhiraj Kumar Jha, Om Prakash, Akhilendra Pratap Singh, Rajarshi Bhattacharyya |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Fabrication Nanocomposite Materials science Nanoparticle chemistry.chemical_element 02 engineering and technology Molar absorptivity 021001 nanoscience & nanotechnology 03 medical and health sciences 030104 developmental biology chemistry Aluminium Broadband Return loss Ferrite (magnet) Composite material 0210 nano-technology |
| Zdroj: | 2017 IEEE Applied Electromagnetics Conference (AEMC). |
| DOI: | 10.1109/aemc.2017.8325681 |
| Popis: | In this paper, synthesis of Ni 0.5 Zn 0.5 Fe 2 O 4 nanoparticles via sol-gel process followed by fabrication of ultra-thin layer (90 μm) of ferrite-polymer nanocomposite on an aluminum (Al) substrate is carried out. The structural characterizations show that pure Ni-Zn ferrite phase formation occurred with average particles size of ∼ 19 nm. The nanocomposite coating shows excellent broadband absorption properties over the frequency range 4–15 GHz with absorptivity of greater than 85%. Simulations were performed for obtaining the optimum film-thickness of ferrite-nanocomposite and found that the return loss for varying thickness of ferrite layer was minimum for 5 μm thickness. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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