State of the art and prospects of Fe3O4/carbon microwave absorbing composites from the dimension and structure perspective

Wang, Xiangyu; Xing, Xiaofei; Zhu, Hongsong; Li, Jing; Liu, Tong

doi:10.1016/j.cis.2023.102960

Cited by 36 publications

(7 citation statements)

References 157 publications

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“…Since CNTs are not magnetic materials, the addition of CNTs will decrease the magnetic properties of the composite absorber, leading to a decreased capacity to store and dissipate magnetic energy. 38–40 Combined with the morphology characteristics shown in Fig. 1, the tubular CNT-coated Fe 3 Al flake structure weakens the magnetic properties of Fe 3 Al to some extent.…”

Section: Resultsmentioning

confidence: 94%

Enhanced microwave absorption performance of Fe₃Al flakes by optimizing the carbon nanotube coatings

Luo,

Xie,

Cao

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 94%

Enhanced microwave absorption performance of Fe₃Al flakes by optimizing the carbon nanotube coatings

Luo,

Xie,

Cao

et al. 2024

RSC Adv.

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“…High Ms and Hc can usually promote exchange resonance at high frequencies and increase magnetic loss. 44 The μ′ values of each sample show a general decline as the frequency increases within the range 2−18 GHz, as illustrated in Figure 5. Besides, as the carbon source content increases, its μ″ value also increases, which can be attributed to the presence of more carbon sources, promoting the growth of TaC nws , improving crystallinity, and thus possessing higher magnetic properties.…”

Section: Electromagnetic Wave Absorption Characteristicsmentioning

confidence: 85%

“…Meanwhile, the coercivity (Hc) and remanent magnetization (Mr) of each sample are similar. High Ms and Hc can usually promote exchange resonance at high frequencies and increase magnetic loss …”

Section: Resultsmentioning

confidence: 99%

Amorphous Carbon Regulates Defects to Achieve TaC Nanowires with Enhanced Microwave Absorption

Wen,

Guan,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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Carbon/carbon composite materials, as electromagnetic wave-absorbing (EWA) materials, have been widely studied due to their excellent impedance matching and high dielectric loss. In this work, we introduced amorphous carbon into the TaC nanowire (TaC nws ) matrix, effectively optimizing impedance matching. The inclusion of amorphous carbon introduces a substantial quantity of imperfections and interfaces, thereby promoting polarization. The multipolarization loss and magnetic loss mechanism generate electromagnetic synergistic loss effects, significantly improving the attenuation performance of EW. The TaC nws /C sample exhibits exceptional EWA performance, achieving a minimum reflection loss (RL min ) of −54.25 dB and an effective absorption bandwidth (EAB) of 3.6 GHz at a low thickness of merely 1.4 mm. This study presents a novel methodology for the future fabrication of TMC composite materials, thereby holding substantial research implications.

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“…Therefore, EM waves more easily penetrated into the interior of La-CFO@BC absorbers than into the other materials. This result indicated that the EM parameters of the hybrids could be adjusted by rational composite mixing of BC with La-CFO to achieve superior impedance-matching characteristics [ 63 ]. Another significant characteristic parameter that characterizes the performance of the absorber is its ability to absorb electromagnetic waves internally, denoted as α.…”

Section: Resultsmentioning

confidence: 99%

A Novel Low-Density-Biomass-Carbon Composite Coated with Carpet-like and Dandelion-Shaped Rare-Earth-Doped Cobalt Ferrite for Enhanced Microwave Absorption

Shang,

Zhu,

Shang

et al. 2024

Molecules

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A novel low-density composite for the absorption of microwaves was prepared by loading La-doped spinel cobalt ferrite (La-CFO) onto biomass carbon (BC) derived from corn stalks using a hydrothermal method. This composite (La-CFO@BC) not only maintained the advantageous properties of low density and abundant porosity, but also exhibited a unique morphology, with La-CFO displaying a carpet-like structure interspersed with dandelion-shaped particles. The incorporation of La-CFO effectively tuned the electromagnetic parameters of the composite, thereby improving its impedance-matching attributes and its ability to absorb microwave radiation. At a frequency of 12.8 GHz for electromagnetic waves and with a thickness of 2.5 mm, La-CFO@BC demonstrated remarkable performance in microwave absorption, attaining a noteworthy minimum reflection (RLmin) of −53.2 dB and an effective absorption bandwidth (EAB) of 6.4 GHz. Furthermore, by varying the thickness of the La-CFO@BC within the range of 1.0 to 5.5 mm, the EAB could be broadened to 13.8 GHz, covering the entire X-band, the entire Ku-band, and a substantial portion of the C-band. This study demonstrated that La-CFO@BC was a promising alternative for electromagnetic wave attenuation, which offered superior performance in microwave absorption.

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State of the art and prospects of Fe3O4/carbon microwave absorbing composites from the dimension and structure perspective

Cited by 36 publications

References 157 publications

Enhanced microwave absorption performance of Fe₃Al flakes by optimizing the carbon nanotube coatings

Enhanced microwave absorption performance of Fe₃Al flakes by optimizing the carbon nanotube coatings

Amorphous Carbon Regulates Defects to Achieve TaC Nanowires with Enhanced Microwave Absorption

A Novel Low-Density-Biomass-Carbon Composite Coated with Carpet-like and Dandelion-Shaped Rare-Earth-Doped Cobalt Ferrite for Enhanced Microwave Absorption

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State of the art and prospects of Fe3O4/carbon microwave absorbing composites from the dimension and structure perspective

Cited by 36 publications

References 157 publications

Enhanced microwave absorption performance of Fe3Al flakes by optimizing the carbon nanotube coatings

Enhanced microwave absorption performance of Fe3Al flakes by optimizing the carbon nanotube coatings

Amorphous Carbon Regulates Defects to Achieve TaC Nanowires with Enhanced Microwave Absorption

A Novel Low-Density-Biomass-Carbon Composite Coated with Carpet-like and Dandelion-Shaped Rare-Earth-Doped Cobalt Ferrite for Enhanced Microwave Absorption

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Enhanced microwave absorption performance of Fe₃Al flakes by optimizing the carbon nanotube coatings

Enhanced microwave absorption performance of Fe₃Al flakes by optimizing the carbon nanotube coatings