Ba0.69Sr0.17Cd0.07Zn0.07Fe12O19 nanostrucutres/conducting polyaniline nanocomposites; synthesis, characterization and microwave absorption performance

Tadjarodi, Aza­deh; Kerdari, Hamed; Imani, Mina

doi:10.1016/j.jallcom.2012.11.161

Cited by 39 publications

(9 citation statements)

References 32 publications

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“…To overcome the aforementioned problems, researchers have since developed hybrid materials that combine several shielding materials to offset respective limitation of the materials while still retaining its enhanced shielding properties. Various combinations of materials with optimum shielding capabilities have since been developed [7,9,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Emi Shielding Effectiveness of Composites Based on Barium Ferrite, Pani, and MWCNT

Zahari¹,

Guan²,

Cheng³

et al. 2016

PIER M

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Abstract-An electromagnetic interference (EMI) shielding material based on the composite of BaFe 12 O 19 , polyaniline (PANI) and multi-walled carbon nanotube (MWCNT) was proposed. The constituents of the composite were brought together through mechanical mixing and the in-situ polymerization of aniline on the BaFe 12 O 19 and MWCNT surfaces. A series of composite with different MWCNT wt% loadings (0, 5, 10, 15, 20 and 25wt%) was prepared, and its effect on the EMI shielding performance was investigated. X-ray diffraction analysis was performed on all synthesized composites to confirm the phase formations. FESEM micrographs reveal the PANI particle formation on both BaFe 12 O 19 and MWCNT surfaces. Electromagnetic measurements were done by using a rectangular waveguide connected to a network analyser to obtain the permeability, μ r , permittivity, ε r , and shielding effectiveness (SE A and SE R ). The increase in the MWCNT loading results in the enhancement of the composite's shielding performance to a certain limit. Optimum EMI shielding performance is shown by sample PBM4 (20wt% MWCNT) with SE R and SE A values of 5.14 dB at 8.2 GHz and 36.41 dB at 12.4 GHz, respectively. The influence of different MWCNT loadings (0, 5, 10, 15, 20 and 25wt%) on the EMI shielding performance of a composite consisting of BaFe 12 O 19 , polyaniline (PANI) and multi-walled carbon nanotube (MWCNT) were investigated.

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Section: Introductionmentioning

confidence: 99%

Emi Shielding Effectiveness of Composites Based on Barium Ferrite, Pani, and MWCNT

Zahari¹,

Guan²,

Cheng³

et al. 2016

PIER M

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“…23 For pure PANI, the crystalline peaks centered at 20.9 and 25.1 are assigned to the (020) and (200) reection of PANI. 21 The XRD patterns of the BF/RGO/PANI nanocomposites exhibit similar crystal peaks compared with PANI except for characteristic peaks of BF, revealing that the BF/RGO/PANI nanocomposites have been fabricated. Fig.…”

Section: Morphological and Structural Characterizationmentioning

confidence: 82%

Excellent microwave absorption properties by tuned electromagnetic parameters in polyaniline-coated Ba_0.9La_0.1Fe_11.9Ni_0.1O₁₉/reduced graphene oxide nanocomposites

et al. 2017

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Ba 0.9 La 0.1 Fe 11.9 Ni 0.1 O 19 nanoparticles were prepared by a co-precipitation method, and Ba 0.9 La 0.1 Fe 11.9 Ni 0.1 O 19 /reduced graphene oxide/polyaniline ternary nanocomposites (BF/RGO/PANI) were prepared by in situ polymerization. Microwave reflection loss, and the permittivity and permeability of BF/RGO/PANI nanocomposites were investigated in the frequency range 2-18 GHz. The prepared samples possessed excellent electromagnetic wave-absorbing performances, and the optimal impedance matching of BF/RGO/PANI nanocomposites was found. The minimum reflection loss reached À49.1 dB near the frequency of 14.08 GHz with a thickness of 1.9 mm and its absorption bandwidth with a reflection loss below À10 dB ranged from 12.4-16.72 GHz with a bandwidth of 4.32 GHz. Our study illustrates that the as-prepared BF/RGO/PANI nanocomposites are promising candidates for use in electromagnetic wave-absorbing materials.

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“…The PANI coating on the BF particles will likely enlarge the particle size of the PANI/BF composite. The saturation magnetization of the composite may decrease owing to the increasing of particle size [20]. Hence, the PANI/ BF samples indicated a lower saturation magnetization (Ms) and remanent magnetization (Mr) than that of the pure ferrite BF.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Polyaniline containing W-type hexaferrite composites for microwave absorption in high-frequency applications

Guo

et al. 2015

J Polym Res

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The W-type hexaferrite Ba 0.85 La 0.15 Co 2 Fe 16 O 27 composite with polyaniline was synthesized by a facile route of in-situ chemical oxidative polymerization. This n o v e l o r g a n i c -i n o r g a n i c c o m p o s i t e m a t e r i a l (PANI/Ba 0.85 La 0.15 Co 2 Fe 16 O 27 ) can be used as a potential microwave absorber. And their microstructure, static magnetization, complex permittivity, permeability and microwave absorbing properties were subsequently investigated. Compared with pure W-type hexagonal ferrite, the composites have higher permittivity and reflection loss, which gradually increase with the increase of PANI content. The excellent microwave absorption in our experiment reached to −14.95 dB at 9.3 GHz with the layer thickness of 4 mm when the mass ratio was 0.7/0.5. More importantly, well reflection loss over a wide frequency range can be achieved by manipulating the content of PANI. The results indicated that the novel organic-inorganic materials composed of polyaniline and W-type hexagonal ferrite had an excellent microwave absorption property, and may be used as lightweight and highly effective microwave absorbers.

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Ba0.69Sr0.17Cd0.07Zn0.07Fe12O19 nanostrucutres/conducting polyaniline nanocomposites; synthesis, characterization and microwave absorption performance

Cited by 39 publications

References 32 publications

Emi Shielding Effectiveness of Composites Based on Barium Ferrite, Pani, and MWCNT

Emi Shielding Effectiveness of Composites Based on Barium Ferrite, Pani, and MWCNT

Excellent microwave absorption properties by tuned electromagnetic parameters in polyaniline-coated Ba_0.9La_0.1Fe_11.9Ni_0.1O₁₉/reduced graphene oxide nanocomposites

Polyaniline containing W-type hexaferrite composites for microwave absorption in high-frequency applications

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Ba0.69Sr0.17Cd0.07Zn0.07Fe12O19 nanostrucutres/conducting polyaniline nanocomposites; synthesis, characterization and microwave absorption performance

Cited by 39 publications

References 32 publications

Emi Shielding Effectiveness of Composites Based on Barium Ferrite, Pani, and MWCNT

Emi Shielding Effectiveness of Composites Based on Barium Ferrite, Pani, and MWCNT

Excellent microwave absorption properties by tuned electromagnetic parameters in polyaniline-coated Ba0.9La0.1Fe11.9Ni0.1O19/reduced graphene oxide nanocomposites

Polyaniline containing W-type hexaferrite composites for microwave absorption in high-frequency applications

Contact Info

Product

Resources

About

Excellent microwave absorption properties by tuned electromagnetic parameters in polyaniline-coated Ba_0.9La_0.1Fe_11.9Ni_0.1O₁₉/reduced graphene oxide nanocomposites