2021
DOI: 10.1038/s41598-021-95332-9
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Structural, microstructural, magnetic and electromagnetic absorption properties of spiraled multiwalled carbon nanotubes/barium hexaferrite (MWCNTs/BaFe12O19) hybrid

Abstract: Microwave absorption properties were systematically studied for synthesised barium hexaferrite (BaFe12O19) nanoparticles and spiraled multiwalled carbon nanotubes (MWCNTs) hybrid. BaFe12O19 nanoparticles were synthesised by a high energy ball milling (HEBM) followed by sintering at 1400 °C and structural, electromagnetic and microwave characteristics have been scrutinized thoroughly. The sintered powders were then used as a catalyst to synthesise spiraled MWCNTs/BaFe12O19 hybrid via the chemical vapour deposit… Show more

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Cited by 21 publications
(12 citation statements)
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“…It is generally accepted that the dielectric loss tangent (tan δ ε ) and magnetic loss tangent (tan δ μ ) are used to evaluate the microwave dissipation capability of absorbers. 53 In Fig. 5b, the tan δ ε curves rise with increasing pyrolysis temperature, indicating an enhancement of lossy ability.…”
Section: Resultsmentioning
confidence: 89%
See 1 more Smart Citation
“…It is generally accepted that the dielectric loss tangent (tan δ ε ) and magnetic loss tangent (tan δ μ ) are used to evaluate the microwave dissipation capability of absorbers. 53 In Fig. 5b, the tan δ ε curves rise with increasing pyrolysis temperature, indicating an enhancement of lossy ability.…”
Section: Resultsmentioning
confidence: 89%
“…Dalton Transactions the microwave dissipation capability of absorbers. 53 In Fig. 5b, the tan δ ε curves rise with increasing pyrolysis temperature, indicating an enhancement of lossy ability.…”
Section: Papermentioning
confidence: 89%
“…This observation aligns with Koop's phenomenological theory and the Maxwell-Wagner model of interfacial polarization. 39 The calculated values of the dielectric constant are 3.323 for CNF, 8.31 for 3MWCNT/CNF, 7.81 for 6MWCNT/CNF and 7.1228 for 9MWCNT/CNF, whereas the values of dielectric loss are 1.399 for CNF, 3.56 for 3MWCNT/CNF, 3.78 for 6MWCNT/CNF and 5.41 for 9MWCNT/ CNF. The addition of MWCNTs enhances the loss of the rigid composites, as anticipated.…”
Section: Microstructural Analysismentioning
confidence: 87%
“…In the case of 30% BaFe 12-x Ga x O 19 /L285 (for x = 0-1.2), the values of the saturation magnetic field H sat are higher (23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33) kOe [39], which results in independence (for random composites) or only a slight increase (for aligned epoxy CMs with a lower saturation field H sat compared with random composites) in f res with the applied magnetic field H ext . This statement is also correct for both random and aligned 1% CNT/30% BaFe 12-x Ga x O 19 /L285 composites.…”
Section: Amplitude-frequency Characteristics Of Nfmrmentioning
confidence: 98%
“…Li, Jun et al investigated co-substituted hexaferrites and their microwave absorption capacity at lower frequencies [22]. Incorporation of a spiraled MWCNTs/BaFe 12 O 19 hybrid into epoxy resin showed the highest microwave absorption of more than 99.9%, with a minimum reflection loss of − 43.99 dB and an absorption bandwidth of 2.56 GHz [23]. The values of the real and imaginary parts of the permittivity of BaCu x Mg x Zr 2x Fe 12−4x O 19 /MWCNTs nanocomposites with different substitutions were much higher than those of the corresponding samples without MWCNTs [12].…”
Section: Introductionmentioning
confidence: 99%