Annealing effects on the microstructure, magnetism and microwave-absorption properties of Fe/TiO2 nanocomposites

Li, Yun; Cheng, Haifeng; Wang, Nannan; Zhou, Shen; Xie, Dongjin; Li, Tingting

doi:10.1016/j.jmmm.2018.09.101

Cited by 33 publications

(8 citation statements)

References 33 publications

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“…In the equations, M s represents saturation magnetization, H c reflects the maximum coercivity, a and b are two constants determined by the material composition, λ is the magnetostriction constant, and ξ is an elastic strain parameter of the crystal [8,55].…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of GNPs@NixSy@MoS2 Composites with Hierarchical Structures for Microwave Absorption

Wang

Zhang

et al. 2019

Nanomaterials

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Graphene-based powder absorbers have been used to attain excellent microwave absorption. However, it is not clear if inferior microwave absorption by pure graphene materials can be attributed to impedance mismatching or inadequate attenuation capability. In this comparative study, we focus on these aspects. Graphene nanoplatelets (GNPs) multi-component composites (GNPs@NixSy@MoS2) were prepared by hydrothermal reaction with different S and Mo molar ratios. The morphologies, phase crystals, elemental composition, and magnetic properties of the composites were also analyzed. In addition, microwave absorption of the as-prepared samples was investigated and it revealed that the impedance mismatching could be responsible for inferior microwave absorption; higher conductivity can lead to skin effect that inhibits the further incidence of microwaves into the absorbers. Furthermore, the optimum reflection loss (RL) of GNPs@NixSy@MoS2-2 can reach −43.3 dB at a thickness of 2.2 mm and the corresponding bandwidth with effective attenuation (RL < −10 dB) of up to 3.6 GHz (from 7.0 to 10.6 GHz). Compared with the GNPs, the enhanced microwave absorption can be assigned to the synergistic effects of conductive and dielectric losses.

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Section: Resultsmentioning

confidence: 99%

Facile Synthesis of GNPs@NixSy@MoS2 Composites with Hierarchical Structures for Microwave Absorption

Wang

Zhang

et al. 2019

Nanomaterials

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“…Having numerous domain walls will increase the total number of magnetic moments so that a large magnetization will be obtained. [20][21][22] 4. Microwave absorption…”

Section: Vsmmentioning

confidence: 99%

Superior microwave absorption ability of CuFe₂O₄/MWCNT at whole Ku-band and half X-band

poor

Hekmatara

2023

Phys. Chem. Chem. Phys.

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“…Currently, the three most commonly used magnetic metals are iron, cobalt and nickel. 23,[80][81][82] Via controlled two-step electrodeposition using an anodic Al 2 O 3 film as a pattern. Cheng et al 23 fabricated Fe/TiO 2 coreshell nanowire arrays.…”

Section: Design Principle Of Microwave Absorbersmentioning

confidence: 99%

Recent progress in TiO₂-based microwave absorption materials

Fei

Jiao

et al. 2023

Nanoscale

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Annealing effects on the microstructure, magnetism and microwave-absorption properties of Fe/TiO2 nanocomposites

Cited by 33 publications

References 33 publications

Facile Synthesis of GNPs@NixSy@MoS2 Composites with Hierarchical Structures for Microwave Absorption

Facile Synthesis of GNPs@NixSy@MoS2 Composites with Hierarchical Structures for Microwave Absorption

Superior microwave absorption ability of CuFe₂O₄/MWCNT at whole Ku-band and half X-band

Recent progress in TiO₂-based microwave absorption materials

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Annealing effects on the microstructure, magnetism and microwave-absorption properties of Fe/TiO2 nanocomposites

Cited by 33 publications

References 33 publications

Facile Synthesis of GNPs@NixSy@MoS2 Composites with Hierarchical Structures for Microwave Absorption

Facile Synthesis of GNPs@NixSy@MoS2 Composites with Hierarchical Structures for Microwave Absorption

Superior microwave absorption ability of CuFe2O4/MWCNT at whole Ku-band and half X-band

Recent progress in TiO2-based microwave absorption materials

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Superior microwave absorption ability of CuFe₂O₄/MWCNT at whole Ku-band and half X-band

Recent progress in TiO₂-based microwave absorption materials