An investigation on the microwave absorption properties of Co–Al–Ti substituted barium hexaferrite-MWCNT nanocomposites

Rostami, Mostafa; Jafarpour, Motahareh; Ara, M.H. Majles

doi:10.1016/j.jallcom.2021.159656

Cited by 18 publications

(3 citation statements)

References 36 publications

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“…Hematite (α-Fe2O3) has properties that are difficult to corrode so it is suitable for applications such as gas sensors, catalysts, lithium-ion batteries, and pigments, it can also be used in the manufacture of permanent magnets. At high temperatures, the α-Fe (Edianta et al, 2021;Gandha et al, 2016;Miftahul Khoiroh et al, 2013;Rostami et al, 2021;Suhendi et al, 2021;Susilawati et al, 2022). (hematite) phase is the most stable phase compared to other phases.…”

Section: Hematite Nanostructure (α-Fe2o3)mentioning

confidence: 99%

Fe2O3 Review: Nanostructure, Synthesis Methods, and Applications

Novita,

Ramlan,

Naibaho

et al. 2024

IJSSR

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Iron sand, which contains magnetite iron ore, exhibits unique magnetic properties when exposed to magnetic fields. Iron ore content, including ?-Fe2O3, FeTiO3, Magnetite (Fe3O4), and others, provides potential uses in various industries such as electronics, energy, chemical, ferrofluids, catalysts, and biomedicine. The location of the discovery of iron sand can affect its mineral characteristics and geological conditions. This research aims to develop innovative synthesis methods to produce hematite nanomaterials from iron sand. Nano-size hematite nanoparticles exhibit unique characteristics, including an increase in specific surface area that is beneficial in applications such as gas sensors, catalysts, lithium-ion batteries, and the manufacture of permanent magnets. Through a literature review, this article presents comprehensive insights into the characteristics of iron sand, variations in synthesis methods, and the structure of hematite nanoparticles. Applications of hematite nanoparticles in water treatment, catalysis, and energy storage are also detailed. This article is expected to contribute to the development of innovative nanomaterial technologies as well as explore the potential of iron sand resources for wider industrial applications.

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Section: Hematite Nanostructure (α-Fe2o3)mentioning

confidence: 99%

Fe2O3 Review: Nanostructure, Synthesis Methods, and Applications

Novita,

Ramlan,

Naibaho

et al. 2024

IJSSR

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“…Microwave (MW) absorption is the process by which the energy of the wave is depleted and subsequently converted to another type of energy, such as thermal energy so that the wave cannot reflect or penetrate through the materials. [332,346] MW absorbing materials are able to transform EM waves into thermal energy with dielectric or magnetic losses. [18,19,82,332,347] For the material to suppress EM waves: first, the EM wave must penetrate the material without front-end reflection, and then it must be attenuated to a safe level.…”

Section: Microwave Absorption Performancementioning

confidence: 99%

Recent Progress in Hexagonal Ferrites Based Composites for Microwave Absorption

Mohammed

Mohammed²,

Srivastava

2022

Cryst. Res. Technol.

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With the fast growth of wireless communication technology in high‐frequency ranges, electromagnetic (EM) interference has become a growing concern that has drawn international attention. The development of materials that can absorb EM radiation is a crucial solution. This review provides a detailed overview of ferrites, specifically hexagonal ferrites and their composites for microwave (MW) absorption. It examines hexagonal ferrite classifications based on the stacking order of their fundamental blocks and their synthesis methods and strategies for improving their magnetic properties. On the other hand, this review included a detailed examination of hexagonal ferrites–conducting polymer, hexagonal ferrites–2D materials, and hexagonal ferrite–other nanomaterials composites for MW absorption applications. Enhancing MW absorption in hexagonal ferrites‐based microwave absorption materials (MAMs) regulates their EM characteristics, improves impedance matching, and creates a diversity of loss mechanisms. In addition, the limitations, challenges, and opportunities of hexagonal ferrites‐based MAMs are discussed, which will be helpful to those working in related areas. As a general application potential, it is worth mentioning that, as a result of recent promising findings in the synthesis of hexagonal ferrites‐based composites, hexaferrite‐based composites are suitable devices in the area of microwave absorption.

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“…BHF-based absorber material synthesis methods include solid state [6,7], ceramic route [8], hydrothermal [9,10], coprecipitation [3,11,12], sol-gel [13][14][15], sol-gel and autocombustion [16][17][18], sonochemistry [19][20][21], a combination method including citric acid, sol-gel, auto-combustion, and sonochemistry [22], a combination technique comprising coprecipitation, hydrothermal, sol-gel, and microemulsion [23], carboxylation-induced polyaniline [24], and mechanical alloying combined with ultrasonic irradiation [4]. Among these methods, mechanical alloying is an interesting method with easy implementation and without producing chemical waste.…”

Section: Introductionmentioning

confidence: 99%

Increased Electromagnetic Wave Absorption through Controlled Sonication Processing on BaFe11.2Mg0.4Al0.4O19 Nanoparticles

et al. 2022

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Electromagnetic waves show rapid development in electronics, telecommunications, and the military. One of the efforts to overcome the effects of electromagnetic interference is by developing microwave-absorbing materials. Barium hexaferrite is the best candidate for development as an absorber material. Microwave absorption in barium hexaferrite can be increased through Mg-Al doping and reducing the particle size. This study aimed to analyze sonication parameters to reduce the particle size by combining destruction methods using mechanical alloying followed by high-power ultrasonic irradiation. Barium hexaferrite was synthesized through mechanical alloying by mixing stoichiometric BaCO3, Fe2O3, Al2O3, and MgO (Sigma-Aldrich p.a 99%) (Mg-Al 0.4%wt). The samples continued the sintering process at 1200 °C for 2 h to grow crystal embryos. The optimal parameters for ultrasonic destruction were using a transducer:reactor diameter ratio of 1:10, a particle density of 5 g/250 mL, and adding a non-ionic surfactant of 0.01% at an amplitude of 55% and a sonication time of 8 h. These methods resulted in the saturation magnetization of 18.50 emu/g and a coercivity of 0.08 Tesla. The reduction in the particle size of BHF doped with Mg-Al was successfully up to 21 nm, resulting in a reflection loss of up to −40.8697 dB at 11.896 GHz (x-band, 8–12 GHz). The BHF nanoparticles doped with Mg-Al effectively absorbed up to 99.99% electromagnetic waves.

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An investigation on the microwave absorption properties of Co–Al–Ti substituted barium hexaferrite-MWCNT nanocomposites

Cited by 18 publications

References 36 publications

Fe2O3 Review: Nanostructure, Synthesis Methods, and Applications

Fe2O3 Review: Nanostructure, Synthesis Methods, and Applications

Recent Progress in Hexagonal Ferrites Based Composites for Microwave Absorption

Increased Electromagnetic Wave Absorption through Controlled Sonication Processing on BaFe11.2Mg0.4Al0.4O19 Nanoparticles

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