Enhancing Microwave Absorbing Properties of Nickel-Zinc-Ferrite with Multi-walled Carbon Nanotubes (MWCNT) Loading at Higher Gigahertz Frequency
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The rapid growth of electronic systems and devices operating within the gigahertz (GHz) frequency range has increased electromagnetic interference. In order to eliminate or reduce the spurious electromagnetic radiation levels more closely in different applications, there is strong research interest in electromagnetic absorber technology. Moreover, there is still a lack of ability to absorb electromagnetic radiation in a broad frequency range using thin thickness. Thus, this study examined the effect of incorporating magnetic and dielectric materials into the polymer matrix for the processing of radar absorbing materials. The experiment evaluated the sample preparation with different weight percentages of multi-walled carbon nanotubes (MWCNT) mixed with Ni0.5Zn0.5Fe2O4 (Nickel-Zinc-Ferrite) loaded into epoxy (P) as a matrix. The prepared samples were analysed by examining the reflectivity measurements in the 8 – 18 GHz frequency range and conducting a morphological study using scanning electron microscopy analyses. The correlation of the results showed that different amounts of MWCNT influenced the performance of the microwave absorber. As the amount of MWCNTs increased, the reflection loss (RL) peak shifted towards a lower frequency range and the trend was similar for all thicknesses. The highest RL was achieved when the content of MWCNTs was 2 wt% with a thickness of 2 mm with an RL of – 14 dB at 16 GHz. The 2.5 GHz bandwidth corresponded to the RL below -10 dB (90% absorption) in the range of 14.5 – 17 GHz. This study showed that the proposed experimental route provided flexible absorbers with suitable absorption values by mixing only 2 wt% of MWCNTs.
I.M.D. Rosa, A. Dinescu, “Effect of Short Carbon Fibers and MWCNTs on Microwave Absorbing Properties of Polyester Composites Containing x-ray-Coated Carbon Fibers”,Compos. Sci. Technol. Vol. 70 , pp. 102–109, 2010.
I. R. Ibrahim, K. A. Matori, I. Ismail, Z. Awang, S. N. A. Rusly, R. Nazlan, F. M. Idris, M. M. M. Zulkimi, N. H. Abdullah, M. S. Mustaffa, F. N. Shafiee, M. Ertugrul, “A Study on Microwave Absorption Properties of Carbon Black and Ni0.6Zn0.4Fe2O4 Nanocomposites by Tuning the Matching-Absorbing Layer Structures”, Scientific Reports, Vol. 10, pp. 1-14, 2020.
P. Savi, M. Giorcelli, S. Quaranta, “Multi-Walled Carbon Nanotubes Composites for Microwave Absorbing Applications”, Applied Science, Vol. 9, pp. 1-10, 2019.
I. Abdalla, J. Shen, J. Yu, Z. Li, B. Ding, “Co3O4/carbon composite nanofibrous membrane enabled high-efficiency electromagnetic wave absorption”, Scientific Reports, Vol. 8, pp. 1-11, 2018.
Z. H. Liu, R. Tao, G. D. Ban, P. Luo, “Absorbing Property of Multi -layered Short Carbon Fiber Absorbing Coating”, Journal of Science, Vol. 30, pp. 29-37, 2017.
M. S. Cao, W. L. Song, Z. L. Hou, B. Wen, J. Yuan, “The Effects of Temperature and Frequency on Dielectric Properties, Electromagnetic Interference Shielding and Microwave-Absorption of Short Carbon Fiber/Silica Composites”,Carbon, Vol. 48 , pp. 788–796 , 2010
M. Le Floc’h, A. M. Konn, “Some of the magnetic properties of polycrystalline soft ferrites : Origins and developments of a model for the description of the quasistatic magnetization”, J. Phys. IV France,Vol.07 , pp. 187-190, 1997.
I. Ismail, M. Hashim, K.A. Matori, R. Alias, J. Hassan, “The Transition from Paramagnetic to Ferromagnetic States as Influenced by Evolving Microstructure of Ni0.5Zn0.5Fe2O4”, Journal of Superconductivity andNovel Magnetism, Vol. 25 , pp. 71-77 , 2011.
D. N. Bhosale, V. M. S. Verenkar, K. S. Rane, P. P. Bakare, S. R.Sawant, “Initial susceptibility studies on Cu-Mg-Zn ferrites”, J. Mater. Chem. Phys., Vol. 59, pp. 57-62 , 1999.
Somiya, S. Handbook of Advanced Ceramics: Materials, Applications,Processing, and Properties, Elsevier: Netherlands, 2013.
T. Belin, F. Epron, “Characterization methods of carbon nanotubes: a review”, Mater. Sci. Eng. B., Vol. 119, pp. 105-118, 2005.
Z. Wang and G. L. Zhao, “Microwave Absorption Properties of Carbon Nanotubes-Epoxy Composites in a Frequency Range of 2-20 GHz”, Open Journal of Composite Materials, Vol. 3, pp. 17-23, 2013.
J. Majid, G. Ali, P. Ebrahim, “Influence of multiwalled carbon nanotube addition on the magnetic and reflection-loss characteristics of Mn – Sn – Ti substituted strontium ferrite nanoparticles”, Vol. 604, pp. 373-378, 2014.
A. Ghasemi, “Remarkable influence of carbon nanotubes on microwave absorption characteristics of Strontium ferrite/ CNT nanocomposites”,J. Magn. Magn. Mater., Vol. 323, pp. 3133-3137, 2011.
B. P. Singh, V. Choudhary, P. Saini, S. Pande, V. N. Singh, R. B. Mathur, “Enhanced microwave shielding and mechanical properties of high loading MWCNT–epoxy composites”, Journal of Nanoparticle Research, Vol. 15, pp. 1-12 , 2013.
D. L. Zhao, X. Li, Z. M. Shen, “Electromagnetic and microwave absorbing properties of multi-walled carbon nanotubes filled with Ag nanowires”, Materials Science and Engineering B, Vol. 150, pp. 105–110, 2008.
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