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Achieving Ultra-Broad Microwave Absorption Bandwidth Around Millimeter-Wave Atmospheric Window Through an Intentional Manipulation on Multi-Magnetic Resonance Behavior

Liu, Chuyang ; Xu, Lu ; Xiang, Xueyu ; Zhang, Yujing ; Zhou, Li ; Ouyang, Bo ; Wu, Fan ; Kim, Dong-Hyun ; Ji, Guangbin

Nano-Micro Letters, 2024-12, Vol.16 (1), p.176-176, Article 176 [Periódico revisado por pares]

Singapore: Springer Nature Singapore

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Título:
Achieving Ultra-Broad Microwave Absorption Bandwidth Around Millimeter-Wave Atmospheric Window Through an Intentional Manipulation on Multi-Magnetic Resonance Behavior
Autor: Liu, Chuyang ; Xu, Lu ; Xiang, Xueyu ; Zhang, Yujing ; Zhou, Li ; Ouyang, Bo ; Wu, Fan ; Kim, Dong-Hyun ; Ji, Guangbin
Assuntos: Absorbers ; Anisotropy ; Atmospheric windows ; Bandwidths ; Barium hexaferrite ; Conduction losses ; Doping ; Electromagnetic properties ; Electromagnetic radiation ; Electrons ; Engineering ; First principles ; Frequency ranges ; M-type barium ferrite ; Magnetic resonance ; Magnetocrystalline anisotropy field ; Microwave absorption ; Millimeter waves ; Mossbauer spectroscopy ; Multi-magnetic resonance ; Nanoscale Science and Technology ; Nanotechnology ; Nanotechnology and Microengineering ; Polarization ; Pollution abatement ; Rare earth elements ; Special issue on EM Wave Functional Materials ; Ultra-broad bandwidth ; Wu, Fan
É parte de: Nano-Micro Letters, 2024-12, Vol.16 (1), p.176-176, Article 176
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Highlights The frequency and intensity of multi-magnetic resonance are freely regulated by co-doping La 3+ and Zr 4+ ions. Zr 4+ occupation is elaborately modified for promoting the portion of polarization/conduction loss to increase profoundly. The optimized electromagnetic characteristics lead to an ultra-wide bandwidth of 12.5+ GHz around millimeter-wave atmospheric window. The utilization of electromagnetic waves is rapidly advancing into the millimeter-wave frequency range, posing increasingly severe challenges in terms of electromagnetic pollution prevention and radar stealth. However, existing millimeter-wave absorbers are still inadequate in addressing these issues due to their monotonous magnetic resonance pattern. In this work, rare-earth La 3+ and non-magnetic Zr 4+ ions are simultaneously incorporated into M-type barium ferrite (BaM) to intentionally manipulate the multi-magnetic resonance behavior. By leveraging the contrary impact of La 3+ and Zr 4+ ions on magnetocrystalline anisotropy field, the restrictive relationship between intensity and frequency of the multi-magnetic resonance is successfully eliminated. The magnetic resonance peak-differentiating and imitating results confirm that significant multi-magnetic resonance phenomenon emerges around 35 GHz due to the reinforced exchange coupling effect between Fe 3+ and Fe 2+ ions. Additionally, Mössbauer spectra analysis, first-principle calculations, and least square fitting collectively identify that additional La 3+ doping leads to a profound rearrangement of Zr 4+ occupation and thus makes the portion of polarization/conduction loss increase gradually. As a consequence, the La 3+ –Zr 4+ co-doped BaM achieves an ultra-broad bandwidth of 12.5 + GHz covering from 27.5 to 40 + GHz, which holds remarkable potential for millimeter-wave absorbers around the atmospheric window of 35 GHz.
Editor: Singapore: Springer Nature Singapore
Idioma: Inglês

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Achieving Ultra-Broad Microwave Absorption Bandwidth Around Millimeter-Wave Atmospheric Window Through an Intentional Manipulation on Multi-Magnetic Resonance Behavior

Liu, Chuyang ; Xu, Lu ; Xiang, Xueyu ; Zhang, Yujing ; Zhou, Li ; Ouyang, Bo ; Wu, Fan ; Kim, Dong-Hyun ; Ji, Guangbin

Singapore: Springer Nature Singapore

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