Effects of Calcination Temperature on Magnetic and Microwave Absorption Properties of SrFe12O19/Ni0.6Zn0.4Fe2O4 Composites

Afshar, Shahrara; Masoudpanah, S.M.; Hasheminiasari, M.

doi:10.1007/s11664-020-07943-z

Cited by 18 publications

(2 citation statements)

References 35 publications

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“…Work has focused on a powder sample of different morphologies and dense sintered specimens. In the case of the former, Afshar et al [198] recently studied SFO/Ni 0.6 Zn 0.4 Fe 2 O 4 composite samples annealed at 700 • C-800 • C. The demagnetization curves show two-step reversal, strongly suggesting that the magnetic phases are not exchange-coupled. As relatively high temperature is applied, there is a good chance that chemical bonds between hard and soft particles exist, but the particle sizes observed in their SEM images show particles that are clearly above the rigid coupling threshold size of 20 nm [68].…”

Section: All-oxide Compositesmentioning

confidence: 99%

Topical Review: Progress and Prospects of Hard Hexaferrites for Permanent Magnet Applications

Fernández¹,

Sangregorio²,

Figuera³

et al. 2020

J. Phys. D: Appl. Phys.

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Permanent magnets based on hard hexaferrite represent the largest family of magnets being used today by volume. They generate moderate remanence induction, but present crucial advantages in terms of availability, cost, resistance to demagnetization and corrosion and absence of eddy current losses. As a consequence, ferrites are the most logical candidate for substitution of rare-earths in selected applications that do not demand the best performing magnets. If the remanence of ferrite-based magnets was to be improved, even mildly, the door to a larger scale substitution could be opened. In this framework, we review here current strategies to improve the properties of hexaferrites for permanent magnet applications. We first discuss the potential of exploring the nanoscale. Second, progress related to controllably doping hexaferrites is revised. Third, results achieved by fabricating hard-soft magnetic composites using ferrites as the hard phase are presented. Finally, future prospects and new potential end applications for ferrite magnets are discussed.

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Section: All-oxide Compositesmentioning

confidence: 99%

Topical Review: Progress and Prospects of Hard Hexaferrites for Permanent Magnet Applications

Fernández¹,

Sangregorio²,

Figuera³

et al. 2020

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Generally, combining magnetic loss materials with suitable electromagnetic matching and complementary electromagnetic responses is a viable route. [ 21,36,37 ] However, traditional magnetic loss materials [ 38–46 ] have deficiencies in that the permeability and conductivity cannot be taken into account, and the absorption band is narrow, which limits further breakthroughs in the absorbing performance of composite systems. Therefore, it is difficult to achieve multispectral compatible strong absorption.…”

Section: Introductionmentioning

confidence: 99%

Temperature‐Induced Self‐Decomposition Doping of Fe₃GeTe₂ to Achieve Ultra‐High Tc of 496 K for Multispectral Compatible Strong Electromagnetic Wave Absorption

et al. 2023

Adv Funct Materials

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Fe3GeTe2 provides an ideal system for the study of itinerant ferromagnetism. However, the Curie temperature (Tc) below room temperature limits its further in‐depth research and wide applications. Here, the Tc of 224 K for Fe3GeTe2 is greatly increased to 496 K for Fe3GeTe2/FeTe2/Fe3Ge by temperature‐induced self‐decomposition doping, contributing to improve the electromagnetic response for enhancing the absorption strength and bandwidth and boosting application potentials at higher temperatures. Then, to achieve the multispectral compatible strong absorption, room temperature ferromagnetic dielectric graphene@Fe3GeTe2/FeTe2/Fe3Ge absorber with 3D porous network structure is prepared by synergistic self‐assembly. It has high Tc of 443 K with strong electromagnetic synergistic loss, achieving reflection loss of −61 dB at 12.6 GHz. Moreover, its absorption loss in the terahertz band (0.1–1.6 THz) is 76 dB, and the average loss is greater than 50.4 dB. Furthermore, the absorber is very potential as stealth skin to efficiently reduce satellite RCS with a multi‐angle and multi‐band manner in the gigahertz and terahertz bands, thus achieving the purpose of stealth. Compared with the reported conventional absorbers, the absorber has a multispectral compatible strong absorption performance covering gigahertz and terahertz bands, thus very promising for electromagnetic protection of electromagnetic communication and space vehicles.

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Ferroic Transition Metal Oxide Nano‐heterostructures: From Fundamentals to Applications

Varvaro

Omelyanchik

Peddis

2022

Tailored Functional Oxide Nanomaterials

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Effects of Calcination Temperature on Magnetic and Microwave Absorption Properties of SrFe12O19/Ni0.6Zn0.4Fe2O4 Composites

Cited by 18 publications

References 35 publications

Topical Review: Progress and Prospects of Hard Hexaferrites for Permanent Magnet Applications

Topical Review: Progress and Prospects of Hard Hexaferrites for Permanent Magnet Applications

Temperature‐Induced Self‐Decomposition Doping of Fe₃GeTe₂ to Achieve Ultra‐High Tc of 496 K for Multispectral Compatible Strong Electromagnetic Wave Absorption

Ferroic Transition Metal Oxide Nano‐heterostructures: From Fundamentals to Applications

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Effects of Calcination Temperature on Magnetic and Microwave Absorption Properties of SrFe12O19/Ni0.6Zn0.4Fe2O4 Composites

Cited by 18 publications

References 35 publications

Topical Review: Progress and Prospects of Hard Hexaferrites for Permanent Magnet Applications

Topical Review: Progress and Prospects of Hard Hexaferrites for Permanent Magnet Applications

Temperature‐Induced Self‐Decomposition Doping of Fe3GeTe2 to Achieve Ultra‐High Tc of 496 K for Multispectral Compatible Strong Electromagnetic Wave Absorption

Ferroic Transition Metal Oxide Nano‐heterostructures: From Fundamentals to Applications

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Temperature‐Induced Self‐Decomposition Doping of Fe₃GeTe₂ to Achieve Ultra‐High Tc of 496 K for Multispectral Compatible Strong Electromagnetic Wave Absorption