Broadband magneto-dielectric response of particulate ferrite polymer composite at microwave frequencies

Borah, Subasit; Bhattacharyya, Nidhi S.

doi:10.1016/j.compositesb.2012.01.069

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…Thereby, the electrical physics constant which describes how EM waves affect the dielectric material is known as complex permittivity (εr), Equation (6): ε = ε = ε′ − jε′′ (6) where the real part, ε', indicates the charge storage and the imaginary part, ε'', indicates the dielectric loss [29]. Similarly, for magnetic material the applied magnetic field induces spin rotation and moment dipole [30]. The complex permeability (μr) describes the behavior of the magnetic material with the EM wave, Equation (7):…”

Section: Loss Mechanismsmentioning

confidence: 99%

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Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

2021

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The development of sophisticated telecommunication equipment and other electro-electronic devices resulted in a kind of electromagnetic pollution that affects the performance of other equipment as well as the health of human beings. Intrinsically conducting polymers (ICP), mainly polyaniline and polypyrrole, have been considered as promising candidates for applications in efficient electromagnetic interference shielding (EMI) due to their ease of preparation, light weight, good conductivity and corrosion resistance. One of the important advantages of these materials is the capability to interact with the EM radiation through both absorption and reflection mechanisms thus enlarging the field of application. In this context, this review article describes a recent overview of the existing methods to produce intrinsically conducting polymers and their blends for electromagnetic shielding application. Additionally, it highlights the relationship between preparation methods reported in the literature with the structure and properties, such as electrical conductivity, electromagnetic shielding effectiveness (EMI SE), complex permittivity and permeability of these materials. Furthermore, a brief theory related to the electromagnetic mechanism and techniques for measuring the microwave absorbing properties are also discussed.

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Section: Loss Mechanismsmentioning

confidence: 99%

“…where the real part, ε , indicates the charge storage and the imaginary part, ε , indicates the dielectric loss [29]. Similarly, for magnetic material the applied magnetic field induces spin rotation and moment dipole [30]. The complex permeability (µ r ) describes the behavior of the magnetic material with the EM wave, Equation (7):…”

Section: Loss Mechanismsmentioning

confidence: 99%

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

2021

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“…Entretanto, devido à atração magnética, as nanopartículas de ferrita tendem a formar aglomerados que podem comprometer seu desempenho em certas aplicações. Uma das soluções propostas tem sido dispersar as nanopartículas em materiais não magnéticos [1][2][3][4][5][6][7][8][9][10]. Um material não magnético conveniente é a parafina, um material relativamente barato e com um baixo ponto de fusão.…”

Section: Introductionunclassified

Anisotropia Magnética De Compósitos De Ferrita De Manganês E Parafina

Melo¹,

Aguilera²,

Figueiredo³

et al. 2017

Anais Do Congresso Anual Da ABM

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Resumo Nanopartículas de ferrita de manganês (MnFe2O4) foram dispersas em parafina e as propriedades físicas do compósito resultante foram investigadas por ressonância ferromagnética (RFM). Os resultados mostraram que a dispersão em quantidades moderadas de parafina aumenta significativamente a anisotropia magnética das nanopartículas de ferrita, um resultado que pode ser de interesse para aplicações práticas do compósito.

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“…Composite ME (magnetoelectric) materials provide coupled magnetic and electrical phenomena [20]. That is, a magnetic field affects the electrical polarization, and an electrical field affects the magnetization.…”

mentioning

confidence: 99%

PbTiO3/PbFe12O19 nanocomposites: Green synthesis through an eco-friendly approach

Ansari

Sobhani

Salavati‐Niasari

2016

Composites Part B: Engineering

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Broadband magneto-dielectric response of particulate ferrite polymer composite at microwave frequencies

Cited by 10 publications

References 16 publications

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

Anisotropia Magnética De Compósitos De Ferrita De Manganês E Parafina

PbTiO3/PbFe12O19 nanocomposites: Green synthesis through an eco-friendly approach

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