Electromagnetic properties and microwave absorption properties of BaTiO3–carbonyl iron composite in S and C bands

Rui-gang, Yang

doi:10.1016/j.jmmm.2011.02.013

Cited by 29 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The microwave absorbing properties of the prepared RAMs were explained with the help of the characteristic electromagnetic parameters by using the Equation (1) and (2) [37], are related in this manner:…”

Section: Microwave Absorbing Propertiesmentioning

confidence: 99%

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Bhattacharya¹,

Sahoo²,

Das³

2013

Express Polym. Lett.

108

View full text Add to dashboard Cite

Multiwall carbon nanotube (MWCNT) based nanocomposites were prepared by a two-step process. Firstly, titanium dioxide (TiO2) coated MWCNT was prepared via sol-gel technique. In the second step, the acid modified MWCNTs were dispersed in the thermoplastic polyurethane matrix by solution blending process. Characterizations of the nanocomposites were done by X-ray diffraction analysis, X-ray photoelectron spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy and Energy-dispersive X-ray spectroscopy. Microwave absorption studies of the nanocomposites were carried out in X-band region. The microwave absorption result was discussed with the help of complex permittivity and permeability of the prepared radar absorbing material (RAM). The result showed superior microwave absorption property of the composite containing both TiO2 coated MWCNT and magnetite (Fe3O4). This result is due to the effective absorption of both electrical and magnetic components of the microwave. RAM-MW, RAM-Ti, RAM-Ti@MW and RAMTi@ MW/Fe and showed the maximum reflection loss of –16.03 dB at 10.99 GHz, –8.4 dB at 12.4 GHz, –36.44 dB at 12.05 GHz and –42.53 dB at 10.98 GHz respectively. Incorporation of MWCNT enhanced the thermal stability of the composite which has been confirmed by thermogravimetric analysis

show abstract

Section: Microwave Absorbing Propertiesmentioning

confidence: 99%

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Bhattacharya¹,

Sahoo²,

Das³

2013

Express Polym. Lett.

108

View full text Add to dashboard Cite

show abstract

“…There have also been reports on improving EM properties of carbonyl iron composites by mixing with other components, such as ferrite,163,164 manganite,165 ferroelectrics,166 carbon black,167 carbon fibre,168 carbon nanotubes169 – 171 and others 172,173. Using ferrites is understandable because their composites are also good EM materials, as demonstrated in the previous section and will be stated in next section.…”

Section: Composite Materials With Magnetic Metallic Inclusionsmentioning

confidence: 86%

“…Therefore, as expected, the sample made of the SiO 2 coated powder displayed much better microwave attenuation capability, since the reduced permittivity led to an improved impedance matching. 9 There have also been reports on improving EM properties of carbonyl iron composites by mixing with other components, such as ferrite, 163,164 manganite, 165 ferroelectrics, 166 carbon black, 167 carbon fibre, 168 carbon nanotubes [169][170][171] and others. 172,173 Using ferrites is understandable because their composites are also good EM materials, as demonstrated in the previous section and will be stated in next section.…”

Section: Composite Materials With Magnetic Metallic Inclusionsmentioning

confidence: 99%

Recent progress in some composite materials and structures for specific electromagnetic applications

Kong

Liu

et al. 2013

International Materials Reviews

429

139

View full text Add to dashboard Cite

This review aims to summarise the progress in some materials and structures for electromagnetic applications, such as microwave absorption, electric shielding and antenna designs, which have been developed in recent years. Composites with spherical powders for microwave absorption focus mainly on those based on ferrites (especially hexagonal), carbonyl iron and related alloys and various newly emerged nanosized materials. Composites with long conductive fibres as fillers will be summarised, with speical attentions to prediction, measurment and evaluation of their performances. Metamaterials include structures for microwave absorbing applications, tunable materials or structures with reflection or transmission coefficients that are tunable by external magnetic or electric fields, and specially designed structures for microwave absorbing applications, with thickness much smaller than that of conventional composite materials and performances that can be optimised by the physical properties of substrates, and new metamaterials constructed with ferrite cores wound by metallic wire coils that exhibited unique magnetic properties, with extremely high real and imaginary permeability, which are adjustable or tunable by varying their configurations. Magnetodielectric materials, with matching permeability and permittivity, together with sufficiently low magnetic and dielectric loss tangents, with potential applications in antenna miniaturisation, will be discussed.

show abstract

“…Can these materials be excellent additives for other absorbers? Many investigations have been carried out to answer these questions [1,2,3]. However, no widely-accepted agreement has been reached, which means further investigation is needed.…”

Section: Introductionmentioning

confidence: 99%

Influence of Lamellar Graphite Additions on the Electro-Magnetic Properties of Carbonyl Iron

Zeng

et al. 2014

AMR

View full text Add to dashboard Cite

For the purpose of investigating the influence of graphite addition on the property of carbonyl iron absorber, some samples were made by mixing graphite and carbonyl iron powders. The electro-magnetic parameters were then measured and compared between samples containing different graphite mass ratio. Microstructures of these samples were observed to make sure that additions were uniformly distributed in these samples. By this way, the influence of graphite addition was systematically analyzed.

show abstract

Electromagnetic properties and microwave absorption properties of BaTiO3–carbonyl iron composite in S and C bands

Cited by 29 publications

References 18 publications

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Recent progress in some composite materials and structures for specific electromagnetic applications

Influence of Lamellar Graphite Additions on the Electro-Magnetic Properties of Carbonyl Iron

Contact Info

Product

Resources

About