Effect of milling time on microwave absorption ability on barium-hexaferrite nanoparticles

Gunanto, Yohanes Edi; Izaak, Maya Puspitasari; Silaban, Saronom; Adi, Wisnu Ari

doi:10.1088/1742-6596/1011/1/012058

Cited by 7 publications

(8 citation statements)

References 10 publications

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“…Generally, the ε of the extracted Fe 3 O 4 particles from mill scale decreased as the frequency rose. This trend is diffuse with ferrite and can explained by the Maxwell-Wenger polarization model [44]. In addition, the ε" values also appeared to decrease with frequency.…”

Section: Complex Permittivitymentioning

confidence: 78%

“…The proper choice of nanoscale materials is key in achieving the multifunctional properties that are required by microwave absorption applications, and the synthesis of microwave absorber composites using polymers and magnetic filler at different scales using the simplest mechanical ball-milling method has an important place in this research. For instance, the impact of milling time on the microwave absorption properties of barium hexaferrite nanoparticles was studied by Gunanto et al [44]. Their results demonstrated that as milling time increased, grain size dropped and maximum peak absorption rose significantly.…”

Section: Introductionmentioning

confidence: 99%

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Structural, Electromagnetic and Microwave Properties of Magnetite Extracted from Mill Scale Waste via Conventional Ball Milling and Mechanical Alloying Techniques

et al. 2021

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This study presents the utilization of mill scale waste, which has attracted much attention due to its high content of magnetite (Fe3O4). This work focuses on the extraction of Fe3O4 from mill scale waste via magnetic separation, and ball milling was used to fabricate a microwave absorber. The extracted magnetic powder was ground-milled using two different techniques: (i) a conventional milling technique (CM) and (ii) mechanical alloying (MM) process. The Fe3O4/CM samples were prepared by a conventional milling process using steel pot ball milling, while the Fe3O4/MM samples were prepared using a high-energy ball milling (HEBM) method. The effect of milling time on the structural, phase composition, and electromagnetic properties were examined using X-ray diffraction (XRD) and a vector network analyzer (VNA). XRD confirmed the formation of magnetite after both the magnetic separation and milling processes. The results revealed that Fe3O4 exhibited excellent microwave absorption properties because of the synergistic characteristics of its dielectric and magnetic loss. The results showed that the Fe3O4/CM particle powder had a greater absorption power (reflection loss: <−10 dB) with 99.9% absorption, a minimum reflection loss of −30.83 dB, and an effective bandwidth of 2.30 GHz for 2 mm thick samples. The results revealed the Fe3O4/MM powders had higher absorption properties, including a higher RL of −20.59 dB and a broader bandwidth of 2.43 GHz at a matching thickness of only 1 mm. The higher microwave absorption performance was attributed to the better impedance matching property caused by the porous microstructure. Furthermore, the magnetite, Fe3O4 showed superior microwave absorption characteristics because of the lower value of permittivity, which resulted in better impedance matching. This study presents a low-cost approach method by reutilizing mill scale waste to fabricate a high purity crystalline Fe3O4 with the best potential for designing magnetic nano-sized based microwave absorbers.

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Section: Complex Permittivitymentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Structural, Electromagnetic and Microwave Properties of Magnetite Extracted from Mill Scale Waste via Conventional Ball Milling and Mechanical Alloying Techniques

et al. 2021

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“…From these several methods, the milling method is easier to do, simpler, and has low cost. The milling method can be carried out in a wet state by using liquid alcohol to reduce the effects of heat generated during the milling process [12]. In addition to the manufacturing method, the temperature treatment in the sample making process also affects the size of the crystals, the saturation magnetization, and the coercivity field which is correlated with the anisotropy constant [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have found that ferrite nickel is used as MAM, but most of the research focuses on absorption at high frequencies, especially in the X-band (8-12 GHz) range. In this study, the potential for nickel ferrite has been tested at frequencies below and above the X-band, namely the L (2-4 GHz), C (4-8 GHz), and Ku (12)(13)(14)(15)(16)(17)(18) bands. This research is expected to provide an overview that nickel ferrite has the potential as a candidate for MAM depending on the desired application.…”

Section: Introductionmentioning

confidence: 99%

The Ability of NiFe<sub>2</sub>O<sub>4</sub> Samples to Reduce Electromagnetic Wave Pollution in the Frequency Range of 2-18 Ghz

Gunanto

Sitompul

Izaak

et al. 2023

KEM

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Rapid technological developments have the impact of increasing electromagnetic wave pollution. To reduce this pollution, nickel ferrite (NiFe2O4) nanoparticles are made by using mechanical alloying method with high energy milling in a wet state. X-ray diffractometer was used to characterize the crystal structure and the formed phase; scanning electron microscopy was used to characterize surface morphology; and for magnetization, a vibrating sample of magnetometer was used. Meanwhile, the capability to absorb electromagnetic waves in the 2-18 GHz interval was using a vector network analyzer. NiFe2O4 nanoparticles have a cubic structure, space group Fd-3m, and a crystal size of 127 nm. The shape of the particles resembles a block and is spherical, measuring about 250-300 nm. At room temperature, NiFe2O4 nanoparticles are soft magnetic materials with a magnetic saturation (Ms) of 41.61 emu/g and a coercivity (Hc) of 0.24 kOe. The ability to absorb microwaves, is expressed by reflection loss (RL) ~ -25.81 dB at a frequency (f) 5.16 GHz with a bandwidth (BW) 1.62 GHz, while RL ~ - 18.64 dB at f = 10, 98 GHz with BW = 1.42 GHz.

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“…Ilmenite type Fe 2 O 3 waste (which is processed from natural iron sand) was processed into TiO 2 nanoparticles as one of the pigment raw materials, cosmetics, photocatalytic and if doped on barium hexaferite material it could increase its absorption to electromagnetic waves (radar) [2]. The ability of absorbing electromagnetic waves would increase if the particle size was in Nano order [3][4][5][6]. Some researchers used milling coprecipitation method to obtain great particle size and purity of TiO 2 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

The synthesis of TiO2 nanoparticles by Milling and Coprecipitation Mixed Method

Izaak

Gunanto²,

Sitompul³

et al. 2020

JFA

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Ilmenite type Fe2O3 waste (which is processed from natural iron sand) was processed into TiO2 nanoparticles powder carried out by leaching with HCl and then using high-energy milling (HEM) for 50 hours. The characteristics of the powder such as particle size, size distribution and phases were analyzed using various techniques such as XRD, SEM, EDS and particle size analyzer. Synthesis and characterization of ilmenite type iron sand have been successfully made into TiO2 by milling and coprecipitation mixed method. The purity level of TiO2 was obtained by 85.01%. The particle size of TiO2 was approximately 500 nm.

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Effect of milling time on microwave absorption ability on barium-hexaferrite nanoparticles

Cited by 7 publications

References 10 publications

Structural, Electromagnetic and Microwave Properties of Magnetite Extracted from Mill Scale Waste via Conventional Ball Milling and Mechanical Alloying Techniques

Structural, Electromagnetic and Microwave Properties of Magnetite Extracted from Mill Scale Waste via Conventional Ball Milling and Mechanical Alloying Techniques

The Ability of NiFe<sub>2</sub>O<sub>4</sub> Samples to Reduce Electromagnetic Wave Pollution in the Frequency Range of 2-18 Ghz

The synthesis of TiO2 nanoparticles by Milling and Coprecipitation Mixed Method

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