Optimisation of microwave absorption properties of Fe-substituted Y2Co17−xFex soft-magnetic composites

Zhong, Jinpeng; Tan, Guoguo; Man, Qikui; Ning, Mingqiang; Gao, Yu; Liu, Xincai; Pan, Jing

doi:10.1007/s10854-021-07167-9

Cited by 13 publications

(1 citation statement)

References 51 publications

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“…The results showed that Y 2 Co 17 has good low frequency absorption performance, with a minimum RL of −9.5 dB at 3.8 GHz. Zhong et al [16] studied the absorbing performance of Y 2 Co 17−x Fe x at high frequencies. The best absorbing performance was obtained when x = 9, the thickness was only 2 mm at the best matching, the minimum RL was −46.9 dB, and the effective absorption bandwidth was 4.74 GHz.…”

Section: Introductionmentioning

confidence: 99%

Microwave absorption and bandwidth study of Y₂Co₁₇ rare earth soft magnetic alloy with easy-plane anisotropy

Li¹,

Zheng²,

Hu³

et al. 2023

Chinese Phys. B

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The easy-plane anisotropy of Y2Co17 rare earth soft magnetic alloy has high saturation magnetization, operating frequency, and good impedance matching. Therefore, it is expected to become a kind of high-performance microwave absorbing material. In this paper, Y2Co17 alloy was prepared by reduction-diffusion method, and its micro powder was prepared as polyurethane (PU) based composite absorbing materials (Y2Co17/PU composites). The microwave properties of composites with different volume fractions are calculated. The composites showed outstanding absorption characteristics in the range of 20-30 vol%, and the minimum reflection loss (RL) was less than -50 dB. When the volume fraction was 25%, the effective absorption bandwidth can cover the X-band at a thickness of 1.5 mm, and the Ku-band at a thickness of 1.08 mm. The absorption mechanism was analyzed by the interface reflection model. The RL absorption peak bandwidth mechanism was discussed by using the amplitude relation, and calculating the effective absorption bandwidth at different thicknesses. The effective absorption bandwidth values were in good agreement with the theoretical expectation.

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Section: Introductionmentioning

confidence: 99%

Microwave absorption and bandwidth study of Y₂Co₁₇ rare earth soft magnetic alloy with easy-plane anisotropy

Li¹,

Zheng²,

Hu³

et al. 2023

Chinese Phys. B

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A General Synthesis of Soft Magnetic 2:17‐Type Rare‐Earth Cobalt Nanoalloys Decorated with Graphite as High‐Frequency Electromagnetic Materials

Ma,

Li,

Tian

et al. 2024

Adv Funct Materials

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A general approach is reported to fabricate a series of single‐phase 2:17‐type rare‐earth cobalt (RE2Co17, RE = Y, Ce, Pr, Nd, and Gd) nanoalloys by precisely controlled calcium thermic reduction of amorphous RE‐Co precursors. High‐purity hexagonal RE2Co17 phases are formed without the precipitation of Co and the other RE‐Co phases through the accurately manipulated co‐reduction of the two ions, which avoids the disadvantages of the impurity or second phases for RE metal alloys. RE2Co17/graphite nanostructures constructed with flower‐like RE2Co17 nanoalloys superficially decorated with nanosized graphite are further fabricated by introducing graphene oxides into the co‐reduction process. Compared with traditional magnetic planar‐anisotropy RE2Co17 alloys, the preserved high saturation magnetization (51.2–102.9 A m2 kg−1) and unusually increased coercivity (152–310.5 Oe) are achieved in these graphite‐decorated RE2Co17 nanoalloys. Moreover, these RE2Co17/graphite nanostructures exhibit good microwave absorption with an applied frequency range of 11.76–18 GHz, which shows their potential applications as new‐type Ku‐band electromagnetic materials. This work provides a facial way for the large‐scale production for varieties of single‐phase 2:17‐type RE‐Co nanoalloys and expands their application fields by constructing novel composite structures.

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SiO2-modified Y2Co8Fe9 multifunctional alloys with efficient microwave absorption, oxidation resistance and corrosion resistance

Huang

Rehman²,

Shang³

et al. 2023

Journal of Alloys and Compounds

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Optimisation of microwave absorption properties of Fe-substituted Y2Co17−xFex soft-magnetic composites

Cited by 13 publications

References 51 publications

Microwave absorption and bandwidth study of Y₂Co₁₇ rare earth soft magnetic alloy with easy-plane anisotropy

Microwave absorption and bandwidth study of Y₂Co₁₇ rare earth soft magnetic alloy with easy-plane anisotropy

A General Synthesis of Soft Magnetic 2:17‐Type Rare‐Earth Cobalt Nanoalloys Decorated with Graphite as High‐Frequency Electromagnetic Materials

SiO2-modified Y2Co8Fe9 multifunctional alloys with efficient microwave absorption, oxidation resistance and corrosion resistance

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Optimisation of microwave absorption properties of Fe-substituted Y2Co17−xFex soft-magnetic composites

Cited by 13 publications

References 51 publications

Microwave absorption and bandwidth study of Y2Co17 rare earth soft magnetic alloy with easy-plane anisotropy

Microwave absorption and bandwidth study of Y2Co17 rare earth soft magnetic alloy with easy-plane anisotropy

A General Synthesis of Soft Magnetic 2:17‐Type Rare‐Earth Cobalt Nanoalloys Decorated with Graphite as High‐Frequency Electromagnetic Materials

SiO2-modified Y2Co8Fe9 multifunctional alloys with efficient microwave absorption, oxidation resistance and corrosion resistance

Contact Info

Product

Resources

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Microwave absorption and bandwidth study of Y₂Co₁₇ rare earth soft magnetic alloy with easy-plane anisotropy

Microwave absorption and bandwidth study of Y₂Co₁₇ rare earth soft magnetic alloy with easy-plane anisotropy