| Autor: |
Debashis Sarmah, Nidhi S. Bhattacharyya, Jyoti Prasad Gogoi, S. Sarmah |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
2009 Applied Electromagnetics Conference (AEMC). |
| DOI: |
10.1109/aemc.2009.5430638 |
| Popis: |
A combination of bamboo charcoal (BC), titania (TiO 2 ) and Ni 0.5 Zn 0.5 Fe 2 O 4 spinel ferrites particles were synthesized by hydrothermal method and introduced into Low Density Polyethylene (LDPE) to be a Microwave Absorber. The structural characterizations and surface morphology of Ni 0.5 Zn 0.5 Fe 2 O 4 /BC/Ti composites were investigated by X-ray diffraction (XRD) and scanning electron microscopy respectively. The complex permittivity of composites with polymer to fillers weight ratios (5∶1 &5∶2) was measured in 8–12 GHz microwave frequency range using waveguide technique and the corresponding dielectric loss in the same frequency range. The experimental results reveal a loss tangent variation from 0.25 to 0.30 over X band for 5∶2 w/w ratios and almost 0.11 for 5∶1 w/w ratios. Therefore, Ni 0.5 Zn 0.5 Fe 2 O 4 /BC/Ti composites will be a suitable microwave absorptive material for X band frequency range. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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