Nanostructure Analysis for Microwave Absorption Properties of Fe3O4Particles by Symmetry Top Rotational Molecular Model

Hardianto, Yuda; Taufiq, Ahmad; Hidayat, Arif; Sunaryono, Sunaryono; Listanti, Anita; Wisodo, Hari

doi:10.1088/1757-899x/367/1/012009

Cited by 3 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some studies have reported that, based on the heating rate, Fe 3 O 4 , Fe 2 O 3 , and SiO 2 are hyperactive, active, and inactive, respectively. From the perspective of photon transition, the microwave absorption process of magnetite particles is a rotating molecular mechanism that is related to its own structure [29]. The structure of Fe 3 O 4 is an inverse spinel in which an oxygen atom forms a face-centered cubic lattice densely packed with iron atoms occupying tetrahedral and octahedral positions, which makes the magnetite have ferromagnetic and semi-conductive properties [7].…”

Section: Effect Of Magnetite Powder Dosage On the Microwave Heating Pmentioning

confidence: 99%

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

et al. 2019

View full text Add to dashboard Cite

This article is intended to investigate the microwave heating performance of asphalt mixtures containing magnetite powders (MPAM). For this purpose, the surface temperatures of asphalt mixtures containing different dosages of magnetite powders were measured during microwave heating. The low-temperature bending test and water sensitivity test were also conducted to evaluate the performance of MPAM. Heating rate and reflection loss of different thicknesses of MPAM were determined using a microwave heating test and arch reflectivity test, respectively. The results showed that because its main components are triiron tetroxide and iron oxide, which have excellent microwave-absorbing properties, magnetite powders can be used as microwave absorbers to improve the ability of microwave absorption and increase the heating rate of asphalt mixtures. The heating rate of the asphalt mixtures increased with the increase of the amount of magnetite powder. The addition of magnetite powder improved the low-temperature properties of the asphalt mixture, but it reduced the water stability of the asphalt mixture. Considering that the microwave-absorbing asphalt mixture used for melting snow and ice should have good water stability, the recommended dosage of magnetite powders was 60%. The microwave-absorbing properties of MPAM were related to its thickness in the pavement structure and frequency of microwaves. In order to greatly enhance the absorbing efficiency, future work should be focused on matching thickness and matching frequency.

show abstract

Section: Effect Of Magnetite Powder Dosage On the Microwave Heating Pmentioning

confidence: 99%

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

et al. 2019

View full text Add to dashboard Cite

show abstract

Preparation and Characterization of Magnetite Nanoparticles Combined with Polyaniline and Activated Carbon

Subadra

Sutiami

Taufiq

et al. 2019

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

In this paper, we report the preparation of magnetite nanoparticles combined with polyaniline and activated carbon. The results of the X-Ray diffraction data analysis showed that the samples had a magnetite crystal phase without other phases. The existence of polyaniline and activated carbon was confirmed using Fourier transform infrared spectroscopy characterization shown by the presence of S=O, C-N, and C-C. The sample of synthesis results in this work had the band gap of 3.23 eV. Moreover, the results of data analysis using vector network analyzer revealed the maximum reflection loss value of -14 with the absorbance of 50%. Thereby, the synthesis optimization needs to be done to increase the sample absorbance to the radar wave.

show abstract

The performance of radar absorption of MnxFe3–xO4/rGO nanocomposites prepared from iron sand beach and coconut shell waste

Prakasa¹,

Sumari²,

Santoso³

et al. 2023

AIMSMATES

View full text Add to dashboard Cite

<abstract> In this work, the Fe3O4 nanoparticles from natural iron sand were doped with Mn and combined with reduced-graphene oxide (rGO) to obtain MnxFe3–xO4/rGO nanocomposites with mole fraction variations of the Mn of 0.25, 0.5, and 0.75. The crystalline phase of the synthesized MnxFe3–xO4/rGO nanocomposites formed an amorphous phase. The presence of rGO was observed through EDX results. The magnetical properties of MnxFe3–xO4/rGO nanocomposites were shown by decreasing the Br, HcJ, Hmax along with increasing of Mn doping. Interestingly, increasing rGO and Mn composition made the absorption bandwidth of the MnxFe3–xO4/rGO nanocomposites wider, so that the radar absorption also increased marking by the greater reflection loss that reached −11.95 dB. The increase in the radar absorption performance of MnxFe3–xO4/rGO nanocomposites came from the efficient complementarity between dielectric loss and magnetic loss and interfacial polarization between Fe3O4 doped Mn and rGO. </abstract>

show abstract

Nanostructure Analysis for Microwave Absorption Properties of Fe₃O₄Particles by Symmetry Top Rotational Molecular Model

Cited by 3 publications

References 20 publications

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

Preparation and Characterization of Magnetite Nanoparticles Combined with Polyaniline and Activated Carbon

The performance of radar absorption of Mn<sub>x</sub>Fe<sub>3–x</sub>O<sub>4</sub>/rGO nanocomposites prepared from iron sand beach and coconut shell waste

Contact Info

Product

Resources

About