The effect of transverse magnetic field treatment on wave-absorbing properties of FeNi alloy powders

Zhao, Hui; Zhu, Zhenghou; Xiong, Chao; Xu, Xiangyang; Lin, Qiang

doi:10.1016/j.jmmm.2016.08.087

Cited by 34 publications

(6 citation statements)

References 21 publications

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“…5. Meantime, the values of dielectric/magnetic loss tangents are low in the middle frequency (8)(9)(10)(11)(12), implying the inferior loss abilities for microwave absorption performances of FeCo NWs.…”

Section: -7mentioning

confidence: 99%

“…[1][2][3][4] Not to mention that related electromagnetic (EM) pollutions severely harm the human being's health. 5,6 Nowadays, nanostructured bimetallic absorbers, like FeCo, [7][8][9] FeNi, [10][11][12] and CoNi, 13,14 are of great interest in recent choices for advanced microwave absorbers. These bimetallic absorbers can break through the low saturation magnetizations of monometallic ones, 14,15 which boost magnetic loss for the electromagnetic wave (EMW) absorption ability.…”

Section: Introductionmentioning

confidence: 99%

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Amorphous Bimetallic Nanowires with High-Performance Microwave Absorption: A Case for FeCo Nanowires

Shen

Yao

Liu

et al. 2019

NANO

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Amorphous FeCo nanowires (NWs) with the average diameter of 120[Formula: see text]nm were successfully prepared with a magnetic-field-assisted (MFA) hydrothermal method. Rapid reaction time was adopted to obtain amorphous FeCo NWs, being checked by XRD and TEM. Tuning the stoichiometric ratio of Fe/Co content meets the optimal impedance matching under different absorption frequency, making both improved intensities and frequency ranges of microwave absorption. For example, under 3[Formula: see text]mm coating thickness, the reflection loss (RL) peaks of Fe3Co7, Fe5Co5 and Fe7Co3 NWs are [Formula: see text]25.88[Formula: see text]dB at 4[Formula: see text]GHz, [Formula: see text]19.06[Formula: see text]dB at 4.24[Formula: see text]GHz and [Formula: see text]21.98[Formula: see text]dB at 5.44[Formula: see text]GHz. The related efficient absorption bandwidths ([Formula: see text]10 dB) of Fe3Co7 NWs, Fe5Co5 NWs and Fe7Co3 NWs are 5.40[Formula: see text]GHz, 3.52[Formula: see text]GHz and 4.91[Formula: see text]GHz, respectively. It is ascribed to integrating enhanced dielectric/conductive losses, negligible damages from eddy current effect and good impedance matching for high-performance FeCo NWs absorbers. This work paves a new path on synthesizing bimetallic wire-like nanostructures for microwave absorption demands.

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Section: -7mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Amorphous Bimetallic Nanowires with High-Performance Microwave Absorption: A Case for FeCo Nanowires

Shen

Yao

Liu

et al. 2019

NANO

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“…Fe, Ni and their alloys are very important soft magnetic materials due to their higher saturation magnetization and smaller coercive forces when compared with ferrites [17,18,19,20]. Furthermore, they have a wide range of applications, such as acting as electromagnetic wave absorbers, transformers, magnetic sensors and magnetic recording heads [21,22].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of FeNi3 Nanoparticle Modified Pinus radiata Wood Nanocomposites

Wang¹,

Li²,

Zhao³

et al. 2019

Polymers

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Magnetic FeNi3 nanoparticles were synthesized in the internal structure of wood through an in situ fabrication approach. The morphology, crystalline phase and chemical composition of the FeNi3 modified wood was investigated by X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) analysis and X-ray photoelectron spectroscopy (XPS). SEM confirmed that the magnetic nanoparticles were densely dispersed in the wood matrix. The magnetic hysteresis loops showed that the magnetism of composites is dependent on the amount of FeNi3 loading. The saturation magnetization of magnetic wood increases from 6.3 to 10.8 emu/g with an increase of FeNi3 loading from 12 to 18 wt %. Furthermore, magnetic wood showed significant directional dependence. The presented work will provide a feasible pathway for producing wood composite products.

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“…The iron materials have relatively a large dielectric constant and magnetic permeability coefficient, and are easy to be prepared . In recent years, extensive studies of magnetic MAMs have been reported . The synthesized MAMs were found to have reflection loss under external magnetic field with various field strengths.…”

Section: Introductionmentioning

confidence: 99%

“…They found that this material had a maximum reflection loss of −43.22 dB under an external magnetic field frequency of 10.30 GHz. Zhao et al synthesized Fe 50 Ni 50 powder mixed with a polymer of thickness 1.5 mm . The material was found to have reflection loss of −10 dB at an external field frequency of 3 GHz.…”

Section: Introductionmentioning

confidence: 99%

Computer simulation to investigate absorption of energies of arrayed disk‐like nanoiron particles under magnetic fields

Liu

Tai

et al. 2018

J Chinese Chemical Soc

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In this research, we focus on the studying of absorbed energies of materials under an external magnetic field frequency of 0.5 GHz. This wave corresponds to microwave irradiation. The absorbent materials were arrayed disk‐like iron particles with dimension on the nanometer scale and magnetic responses of the particles were simulated by solving the Landau–Lifshitz–Gilbert equation. The external fields were applied from various directions and energies of absorption of the system were calculated. The maximum absorbed energies were found when the field was 135° ± 30° along the X‐axis or the Y‐axis. The current simulation demonstrated that the direction of applied field results in different absorption energies of the system.

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The effect of transverse magnetic field treatment on wave-absorbing properties of FeNi alloy powders

Cited by 34 publications

References 21 publications

Amorphous Bimetallic Nanowires with High-Performance Microwave Absorption: A Case for FeCo Nanowires

Amorphous Bimetallic Nanowires with High-Performance Microwave Absorption: A Case for FeCo Nanowires

Magnetic Properties of FeNi3 Nanoparticle Modified Pinus radiata Wood Nanocomposites

Computer simulation to investigate absorption of energies of arrayed disk‐like nanoiron particles under magnetic fields

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