Fabrication of BaFe12O19 /CeO2 composite for highly efficient microwave absorption

Gan, Fuxing; Yao, Qingrong; Cheng, Lichun; Zhang, Lang; Liang, Qihua; Guo, Jingxiang; Wang, Man; Zhou, Huaiying; Zhong, Yan

doi:10.1016/j.jallcom.2021.162964

Cited by 30 publications

(6 citation statements)

References 60 publications

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“…The elemental content of Mn is evenly distributed in BaFe 12 O 19 , and Mn addition can enhance the magnetic and dielectric properties, thereby increasing the absorption of EM waves. 8,40,43…”

Section: Resultsmentioning

confidence: 99%

“…The synergistic effect between magnetic and dielectric losses can enhance EM absorption performance. 5,31,43 A core-shell composite is a microstructure that has a synergistic effect between the core and shell owing to interfacial polarization originating from the accumulation of charges and ions at the interface, contributing to increased absorption. 17 The conjugation between the magnetic and dielectric materials results in impedance matching, thereby increasing EM absorption and energy dissipation.…”

Section: Study Of the Vector Network Analysismentioning

confidence: 99%

“…The EDS mapping results show that the composition of the constituent elements of BaFe 12 O 19 @MnO 2 was 3.4% Ba, 24.4% Fe, 52.1% O, and 20.1% Mn. The elemental content of Mn is evenly distributed in BaFe 12 O 19 , and Mn addition can enhance the magnetic and dielectric properties, thereby increasing the absorption of EM waves 8,40,43. Fig.5(a-f) show the structure of the MnO 2 core cell resulting from hydrothermal synthesis at various compositions, temperatures, and hydrothermal holding times at magnications of 500 00× and 1 500 00×.…”

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confidence: 99%

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High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe₁₂O₁₉@MnO₂ core–shell composites

Yustanti,

Noviyanto,

Ikramullah

et al. 2023

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Study Of the Vector Network Analysismentioning

confidence: 99%

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confidence: 99%

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High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe₁₂O₁₉@MnO₂ core–shell composites

Yustanti,

Noviyanto,

Ikramullah

et al. 2023

RSC Adv.

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“…The two peaks at 528.9 eV and 530.85 eV correspond to the lattice oxygen (O L ), attributed to the lattice oxygen in BaTiO 3 and to the Fe-O bond in ferrites respectively. The peak at 532.23 eV is related to oxygen vacancy (O V ) and the peak at 533.58 eV, is the chemisorbed oxygen peak [34][35][36]. Figure 3(d) presents the Ti 2p core level XPS spectrum, which exhibits two peaks at binding energies of approximately 457 eV and 463 eV, corresponding to Ti2p 3/2 and Ti 2p 1/2 , respectively.…”

Section: Structural and Microstructural Analysismentioning

confidence: 99%

Impacts of diffusive ion migration on ferroelectric properties in BaTiO₃ composite

Sun,

Singh,

Ravi

et al. 2024

J. Phys. D: Appl. Phys.

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Multiferroic composites, combining ferroelectric and ferromagnetic properties, hold significant promise in today's technology landscape in a diverse array of fields including information storage devices, energy harvesters, current and magnetic field sensors, tunable devices, and various other domains. Exploring the interaction between these materials and their impact on multiferroic properties is crucial for advancing miniaturized, high-performance devices. A deeper understanding of the interplay between ionic dynamics and microstructure is essential for engineering these composites effectively. This study examines the deterioration of the ferroelectric property of BaTiO3 composite with the incorporation of the magnetic BaFe12O19. The composite is synthesized using the conventional solid-state reaction method. Structural analysis involves X-ray diffraction (XRD), Raman spectroscopy, and field-emission scanning electron microscopy (FESEM). The dielectric and ferroelectric investigations, as well as magnetic analysis, are conducted. The study shows the existence of the electron hopping between different oxidation states of the cations and it elevates the material's conductivity and, generates a leakage current that largely affects the ferroelectric properties by preventing saturation polarization

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“…Magnetic powder materials, such as the magnetic metal powder, ferrite, are currently the most efficient and commonly used radar-absorbing materials (RAM) [1][2][3][4][5][6][7][8][9][10][11]. Zhu et al [12] developed those FeNi alloy nano-powders, such as Fe 20 Ni 80 and Fe 50 Ni 50 , with excellent soft magnetic properties, with particle sizes ranging from 15 nm to 150 nm.…”

Section: Introductionmentioning

confidence: 99%

The Design and Preparation of Permittivity-Adjustable FeNi@SrFe-MOF Composite Powders

Yuan,

Jiang,

Chen

et al. 2024

Coatings

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When the thickness of the wave-absorbing material is low, there exists the problem of the narrow wave-absorbing frequency band, making it difficult to regulate the position of the wave-absorbing peak. In this study, FeNi@SrFe-MOF composite powders were synthesized using a hydrothermal method and a liquid-phase reduction method. The composite powder was spherical, with a particle size of about 50 μm–60 μm; the core layers of the powders were porous SrFe-MOF powders with permanent magnetization, and the outer layers were FeNi alloy nano-powder coatings with a particle size of 100 nm–120 nm, which took into account both the soft magnetization and the permanent magnetization properties of the composite powders. Additionally, a directional magnetic field was applied to the powder coating. By regulating the intensity and direction of the magnetic field, the electromagnetic parameters of the composite powder coating underwent sensitive changes, allowing for the precise regulation of the electromagnetic wave absorption performance of the composite powders. With the increase in magnetic field intensity, the ε′ value decreased significantly. The ε′ values were 8.56–7.35 for H453mT and 6.73–6.12 for H472mT. When no magnetic field was applied, the Snoke limit frequency of the μ′ value was 6.0 GHz. When the magnetic field intensity increased, the Snoke limit frequency of the μ′ value increased from 6.0 GHz, without the magnetic field, to 8.3 GHz; the Snoke limit of the composite powders was shattered. After the H453mT magnetic field regulation treatment, the powder coating exhibited good impedance matching characteristics with air. When the magnetic field intensity was 453mT and the thickness of the composite powders coating was 3.5 mm, the composite powders coating showed the strongest absorption peak when the R-value was −59 dB at 7.8 GHz, and the effective absorption bandwidth reached 3.2 GHz, exhibiting superb absorbent qualities. The wave absorption property of the coating can be sensitively changed by the magnetic field regulation treatment at the condition without changing the powder structure or coating structure, which provides a new strategy for the regulation of the wave absorption property and has broad application prospects.

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Fabrication of BaFe12O19 /CeO2 composite for highly efficient microwave absorption

Cited by 30 publications

References 60 publications

High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe₁₂O₁₉@MnO₂ core–shell composites

High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe₁₂O₁₉@MnO₂ core–shell composites

Impacts of diffusive ion migration on ferroelectric properties in BaTiO₃ composite

The Design and Preparation of Permittivity-Adjustable FeNi@SrFe-MOF Composite Powders

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Fabrication of BaFe12O19 /CeO2 composite for highly efficient microwave absorption

Cited by 30 publications

References 60 publications

High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe12O19@MnO2 core–shell composites

High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe12O19@MnO2 core–shell composites

Impacts of diffusive ion migration on ferroelectric properties in BaTiO3 composite

The Design and Preparation of Permittivity-Adjustable FeNi@SrFe-MOF Composite Powders

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Product

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High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe₁₂O₁₉@MnO₂ core–shell composites

High-performance microwave absorption by optimizing hydrothermal synthesis of BaFe₁₂O₁₉@MnO₂ core–shell composites

Impacts of diffusive ion migration on ferroelectric properties in BaTiO₃ composite