4.7 Article

Electromagnetic wave absorption mechanism for nanocomposites of holmium orthoferrite decorated poly(3,4-ethylenedioxythiophene-5-cyanoindole)

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Investigations of microwave absorption performance of bi-layer absorber composed of FeWO4 & BiVO4 nanocomposite powder in 2-18 GHz

Yang Zhang et al.

Summary: Optimization requires examination of every feature to enhance microwave absorption. The interplay between simulation and experiment is crucial to find optimal findings. This study investigates the microwave absorption characteristics of FeWO4 and BiVO4 nano-materials using mono layer and bilayer samples. Through simulation technique, a bilayer sample with BiVO4 as the top layer (0.6 mm thickness) and FeWO4 as the bottom layer (0.8 mm thickness) achieves a minimum reflection loss (RLmin) of -42 dB with an effective absorption bandwidth (EAB) of 13 GHz (15-2 GHz) at 8.2 GHz frequency. The layered architecture of the absorbent is responsible for its remarkable microwave absorption efficiency. Experimental findings validate the simulated results of the bilayer sample. This work provides a facile synthesis route and insights into the design and performance of a microwave bilayer absorber.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

Article Chemistry, Applied

Morphology, structure and magnetic behavior of orthorhombic and hexagonal HoFeO3 synthesized via solution combustion approach

K. D. Martinson et al.

Summary: Nanostructured HoFeO3 powders were synthesized by solution combustion method with different glycine-nitrate ratios. Two crystal structures, orthorhombic and hexagonal, were identified in the synthesized samples. The magnetic structure of HoFeO3 was found to be magnetically ordered in the presence of stoichiometric glycine. The size of the obtained compositions varied with the G/N ratio. The orthoferrites exhibited a ferromagnetic structure, and their magnetic parameters changed systematically with the redox ratio of the reaction mixture.

JOURNAL OF RARE EARTHS (2022)

Article Materials Science, Ceramics

Optimizing the layer arrangement in a three-layer absorber based on magneto-electric nanocomposite for enhanced microwave absorption

Jie Luo et al.

Summary: In this paper, a new synthetic absorber layer material is investigated, and its macroscopic and microscopic properties as well as constitutive parameters are analyzed. The return loss and shielding effectiveness of three-layer composites with different layer arrangements are predicted. The study finds that the mixture of D and M shows different properties at the microscopic and macroscopic levels, and the three-layer samples with specific layer arrangement exhibit better performance.

CERAMICS INTERNATIONAL (2022)

Article Chemistry, Physical

Sustainable Kapok Fiber-Derived Carbon Microtube as Broadband Microwave Absorbing Material

Aichun Long et al.

Summary: Hierarchical structures derived from biomass, such as carbonized kapok fiber, show excellent microwave-absorbing performance with broad absorption bandwidth. These lightweight and sustainable materials have great potential in the field of microwave absorption.

MATERIALS (2022)

Article Materials Science, Multidisciplinary

Insight into Morphology-Sensitive Microwave Absorption Properties of Biocarbon/MnFe2O4 Composites

Muhammad Imran et al.

Summary: Biocarbon has attracted considerable interest for its wide absorption bandwidth, strong absorption, accessibility, cost-effectiveness, and eco-friendliness. This study investigates the utilization of the inherited morphology of biocarbon to tune the performance of microwave absorbers. The findings reveal that the microwave absorption performance strongly relies on the anisotropic morphology of the biocarbon.

JOURNAL OF MOLECULAR AND ENGINEERING MATERIALS (2022)

Article Materials Science, Ceramics

Hierarchical brain-coral-like structure (3D) vs rod-like structure (1D): Effect on electromagnetic wave loss features of SrFe12O19 and CoFe2O4

Mojtaba Jafarian et al.

Summary: Morphological configuration plays a crucial role in regulating the absorption performance of magnetic materials. This study synthesized two different morphologies of hard and soft magnetic materials and found that hierarchical structure can significantly enhance the absorption performance of magnetic materials through electromagnetic loss features.

CERAMICS INTERNATIONAL (2021)

Article Materials Science, Ceramics

Nano-architectured NiO shell vs 3D microflowers morphology toward enhancement of magneto-electric loss in mesoporous magneto-electric composite

Mojtaba Jafarian et al.

Summary: This study highlights two approaches to improve the microwave absorption performance of SrFe12O19/CoFe2O4/NiO composite, by using different morphologies of nickel oxide nanoparticles and 3D microflower NiO powder physically blended with magnetic microspheres. The core-shell structure composite NiO@Sr/NiO@Co showed better microwave absorption performance compared to the other composite, likely due to the presence of multiple interfaces and junctions leading to interfacial polarization. The successful enhancement of microwave absorption efficiency was demonstrated through the minimum reflection loss value and effective bandwidth of the NiO@Sr/NiO@Co sample.

CERAMICS INTERNATIONAL (2021)

Article Nanoscience & Nanotechnology

Balancing Dielectric Loss and Magnetic Loss in Fe-NiS2/NiS/PVDF Composites toward Strong Microwave Reflection Loss

Na Gao et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

Article Engineering, Electrical & Electronic

Electromagnetic Properties and Absorption Evaluation of Processed Carbonyl Iron and MWCNT at PANI Nanocomposites in the X-Band

Mohamadreza Govahi et al.

IEEE TRANSACTIONS ON MAGNETICS (2019)

Article Materials Science, Multidisciplinary

Insights on the design of a novel multicomponent microwave absorber based on SrFe10Al2O19 and Ni0.5Zn0.5Fe2O4/MWCNTs/polypyrrole

Mojtaba Jafarian et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2019)

Article Materials Science, Multidisciplinary

New insights on microwave absorption characteristics of magnetodielectric powders: Effect of matrix chemical nature and loading percentage

Mojtaba Jafarian et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2019)

Article Materials Science, Multidisciplinary

Facile lotus-leaf-templated synthesis and enhanced xylene gas sensing properties of Ag-LaFeO3 nanoparticles

Mingpeng Chen et al.

JOURNAL OF MATERIALS CHEMISTRY C (2018)

Article Materials Science, Multidisciplinary

Microstructural and magnetic studies on BaMgxZnxX2xFe12-4xO19 (X=Zr,Ce,Sn) prepared via mechanical activation method to act as a microwave absorber in X-band

Seyyed Salman Seyyed Afghahi et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2016)

Article Chemistry, Multidisciplinary

A promising lightweight multicomponent microwave absorber based on doped barium hexaferrite/calcium titanate/multiwalled carbon nanotubes

Seyyed Salman Seyyed Afghahi et al.

JOURNAL OF NANOPARTICLE RESEARCH (2016)

Article Materials Science, Multidisciplinary

The direct carbonization of algae biomass to hierarchical porous carbons and CO2 adsorption properties

Zhongwei Tian et al.

MATERIALS LETTERS (2016)

Article Nanoscience & Nanotechnology

Magnetic spectra and Richter aftereffect relaxation in CexY3-xFe5O12 ferrites

Fu Chen et al.

AIP ADVANCES (2016)

Article Materials Science, Multidisciplinary

Particle size effects on magnetic garnets prepared by a properties of yttrium iron sol-gel method

RD Sánchez et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2002)