1. Coupling NiCo2S4 micro-spheres surface with worm-like AgBr nanoparticles: An effective strategy to cover X-band frequency range with thin thickness.
- Author
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Xie, Huan, Hassan, Ali, Rajhi, Ali A., Mehrez, Sadok, Nag, Kaushik, Mahariq, Ibrahim, and Yang, Guang
- Subjects
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MICROSPHERES , *NANOPARTICLES , *TEST methods , *MICROWAVES , *PERMITTIVITY - Abstract
In this study, achieving NiCo 2 S 4 /AgBr composites is a step in the right direction toward developing efficient microwave absorption fillers. The rough-surfaced NiCo 2 S 4 /AgBr coupled micro-sphere offers a significant enhancement in complex permittivity by changing filler loadings, due to the Debye relaxation process and high conductivity. Moreover, as an efficient wave absorber, the optimal sample demonstrates a decent minimum reflection loss (RL mini) value of −17 dB and its qualifying absorption bandwidth (with RL < −10 dB) astonishingly encompasses the entire X-band (4 GHz). Additionally, the free-space technique was used to analyze the best sample, and the outcomes were compared. Touch-free and non-invasive nature of the free-space methodology has shown it to be a potentially viable testing method. So, comprehensive structural and compositional characterization, along with tunable properties and alternative testing method for preparing superior-quality NiCo 2 S 4 /AgBr samples, paves the way for exciting new microwave absorbents. Hence, NiCo 2 S 4 /AgBr is anticipated to be a very effective microwave absorber. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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