Preparation and microwave absorbing properties in the X-band of natural ferrites from iron sands by high energy milling

Mashuri, X; Lestari, Wien; Triwikantoro, X; Darminto, X

doi:10.1088/2053-1591/aa68b4

Cited by 13 publications

(5 citation statements)

References 11 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The crystallite sizes for these nanoparticles are 81 and 63 nm, respectively, indicating a higher absorption for larger particles. Other researchers have also observed a similar effect with respect to the influence of particles size on microwave absorbing capacity 27,28,29 .…”

Section: Electromagnetic Absorptionsupporting

confidence: 63%

Nanoparticles of Ni1-x Znx Fe2 O4 used as Microwave Absorbers in the X-band

et al. 2019

View full text Add to dashboard Cite

Ferrites nanoparticles of Ni 1-x Zn x Fe 2 O 4 ferrites with x varying between 0 and 1, in steps of 0.2, were obtained by solution combustion synthesis (SCS) and dispersed in oil paint at the concentrations of 10, 20, 30 and 40% by ferrite weight of ferrite, with the aim of producing electromagnetic wave absorbing composites, in the X band (8-12 GHz). The ferrite powders obtained were characterized by X-ray diffraction (XRD), and to determine to mean crystallite size, crystallographic phases, as well as lattice parameters, was used the Rietveld method. The XRD results revealed the majority presence of the spinel cubic ferrite phase for all stoichiometries with crystallite size between 44 and 81 nm. The composites were characterized by the rectangular waveguide transmission line method to measure the absorption of the electromagnetic wave in the X band. The nanocomposites with 40% of NiFe 2 O 4 and Ni 0.8 Zn 0.2 Fe 2 O 4 presented the highest electromagnetic wave absorption performance.

show abstract

Section: Electromagnetic Absorptionsupporting

confidence: 63%

Nanoparticles of Ni1-x Znx Fe2 O4 used as Microwave Absorbers in the X-band

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The utilization of iron sand mineral which is now being developed is iron sand of nanoparticle size [4]. Iron sand in nanopedic sizes has many application opportunities in industry, electronics and medical [5], Earth magnetism studies [6][7] and defence as anti-radar materials [8]. Ref [9] has been synthesize of Fe3O4 nanoparticles from nature iron sands take from Buaya River in Deli Serdang, North Sumatra by co-precipitation method.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Natural Iron Sand From Kata Beach, West Sumatra With High Energy Milling (Hem)

Rianna¹,

Sembiring²,

Situmorang³

et al. 2018

J. Nat.

View full text Add to dashboard Cite

Iron sand is one of the natural resources in West Sumatra that has not been optimally utilized. One of the potential locations to get this iron sand deposits is the coast of Kata. This study aims to analyze the content and size of the iron grains found on the coast of Kata Padang Beach, West Sumatera Province. Coastal sand samples are extracted using permanent magnets to separate magnetic and non-magnetic materials. Characterization of iron sand using Scanning Electron Microscopy with Energy Dispersive X-ray (SEM-EDX) and Vibrating Sample Magnetometer (VSM). The result of characterization using SEM-EDX shows that iron sand samples contain Fe and O elements derived from Phase Magnetite (Fe3O4). Keywords: iron sand, magnetic materials, SEM-EDX, VSM

show abstract

“…6. It is well known that the smaller the particle size greater is the surface area penetrated by the electromagnetic waves [40]. Magnetic dipoles, which result in the more active particles, are one of the properties of absorbing electromagnetic waves.…”

Section: Resultsmentioning

confidence: 99%

Mg0.5Zn0.5Fe2O4-polyurethane thin nanocomposite coating as broadband microwave absorber

et al. 2018

View full text Add to dashboard Cite

We report the synthesis of Mg 0.5 Zn 0.5 Fe 2 O 4 (MZF) nanoparticles by gel combustion technique followed by fabrication of thin layer (~ 100 μm) of ferrite-polymer nanocomposite on aluminum substrate and its application on broadband absorption properties over the microwave frequency range of 4-15 GHz. The particle size of ferrite powder was controlled by changing citrate to nitrate molar ratios of precursors, which exhibit different adiabatic isotherms. XRD analysis showed that ferrite phase formation occurred for all systems and the system with lowest crystallite size (~ 30 nm) was obtained for the stoichiometric citrate to nitrate molar ratio. The nanocomposite coating showed excellent broadband absorption properties with absorptivity greater than 88%. This implied that the real and imaginary part of the surface impedance values of the nanocomposite coatings are close to 377 Ω and 0 Ω respectively, which is impedance of free space over the significant region of the frequency band of interest. The stoichiometric fuel based MZF of smallest average particle size showed best microwave absorption properties. The as-developed MZF nanocomposite coating showed minimum reflection from the coating over this frequency band, which can solve various electromagnetic interference issues, stealth technology, and the radiated EMI management in on board spacecraft and several others.

show abstract

Preparation and microwave absorbing properties in the X-band of natural ferrites from iron sands by high energy milling

Cited by 13 publications

References 11 publications

Nanoparticles of Ni1-x Znx Fe2 O4 used as Microwave Absorbers in the X-band

Nanoparticles of Ni1-x Znx Fe2 O4 used as Microwave Absorbers in the X-band

Characterization of Natural Iron Sand From Kata Beach, West Sumatra With High Energy Milling (Hem)

Mg0.5Zn0.5Fe2O4-polyurethane thin nanocomposite coating as broadband microwave absorber

Contact Info

Product

Resources

About