Improved microwave absorption properties of TiO2 and Ni0.53Cu0.12Zn0.35Fe2O4 nanocomposites potential for microwave devices

Praveena, K.; Sadhana, K.; Liu, Hsiang Lin; Maramu, N.; Himanandini, G.

doi:10.1016/j.jallcom.2016.04.190

Cited by 40 publications

(3 citation statements)

References 62 publications

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“…According to recent observations, transition metal magnetic materials, including Fe, Co, Ni, and their alloy and compounds, are drawing researchers’ particular attention for applying in microwave absorption. − Cobalt nanochains were fabricated and presented dual dielectric resonance and two strong absorption peaks. − Iron submicron cubes showed good electromagnetic wave absorbing characteristics and their minimum reflection loss values were less than −20 dB . CoO 3D nanoflowers exhibited significantly enhanced microwave absorption properties .…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Property and Tunable Microwave Absorption of 3D Nets from Nickel Chains at Elevated Temperature

Liu

Cao

Luo

et al. 2016

ACS Appl. Mater. Interfaces

320

116

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We fabricated the nickel chains by a facile wet chemical method. The morphology of nickel chains were tailored by adjusting the amount of PVP during the synthesis process. Both the complex permittivity and permeability of the three-dimensional (3D) nets constructed by nickel chains present strong dependences on temperature in the frequency range of 8.2-12.4 GHz and temperature range of 323-573 K. The peaks in imaginary component of permittivity and permeability mainly derive from interfacial polarizations and resonances, devoting to dielectric and magnetic loss, respectively. The effect from both dielectric and magnetism contribute to enhancing the microwave absorption. The maximum absorption value of the 3D nickel chain nets is approximately -50 dB at 8.8 GHz and 373 K with a thickness of 1.8 mm, and the bandwidth less than -10 dB almost covers the whole investigated frequency band. These are encouraging findings, which provide the potential advantages of magnetic transition metal-based materials for microwave absorption application at elevated temperature.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Property and Tunable Microwave Absorption of 3D Nets from Nickel Chains at Elevated Temperature

Liu

Cao

Luo

et al. 2016

ACS Appl. Mater. Interfaces

320

116

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“…As is known to us, the MA characteristics of materials are closely related to their complex permittivity and permeability. The real parts of the complex permittivity and permeability respectively represent the electric and magnetic storage capability, while the imaginary parts are related to the dissipation capability of electrical and magnetic energy 50,51 . Figure 9A shows the complex permittivity (

ε^{'}

ε^{″}

) of the as‐obtained products as a function of frequency.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of novel silicon carbide‐based nanomaterials with unique hydrophobicity and microwave absorption property

Zhong

Zhang

Wang

et al. 2020

Int J Applied Ceramic Tech

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With the rapid development of modern electronic information technology, the issues caused by electromagnetic interference (EMI) are becoming more and more serious in the field of civilian. The EMI can not only hinder the normal functions of electronic devices, but also contribute to negative impact on the health of human beings and wildlife. 1,2 In addition, in the military applications, electromagnetic (EM) microwave can be used to detect aircrafts, which might expose the location information of these facilities, thus horribly threatening their survival. 3 Therefore, there is an urgent demand in both civil and military fields for high-performance MA materials that can efficiently absorb EM waves. The ideal MA materials should not only possess remarkable MA capacity over a wide frequency range, but also require some other special properties, such as light weight, thin thickness, good environment stability, etc. 4,5 To exploit the ideal MA materials

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“…These applications are conceived through the design of physical properties, which can be achieved by performing adjustments on the chemical composition of the ferrites, modifying physical properties such as the size of the nanocrystals, crystalline structure, and cation distribution. Doped ferrites NPs have been prepared and investigated by many authors due to opportunity of modulating their size and morphology [16][17][18] , structural 13,14,[19][20][21][22] , dielectric 23,24 and magnetic properties [25][26][27][28][29] by chemical composition of the NPs and the synthetic route. They have been prepared by several techniques including hydrothermal coprecipitation 17,18,30 , polyol synthesis 13 , thermal decomposition 26,31 , combustion method 19 , sol-gel auto-combustion method 25,32 , among others.…”

Section: Introductionmentioning

confidence: 99%

Lattice Strain of Zn-Mn Mixed Ferrite Nanocrystals in a Core-Shell Morpho-Chemical Structure

Martins¹,

Pilati

Paula³

et al. 2022

Mat. Res.

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In this work, the crystalline structure, chemical composition, size, and morphology of core@shell nanoparticles based on Zn-Mn ferrite nanocrystals were investigated. These materials have been proposed as promising candidates for multifunctional applications in biomedicine, catalysis, environmental remediation, among others. Those properties were probed by using several experimental techniques such as Synchrotron X-Ray Diffraction, Energy-Dispersive X-ray Spectroscopy, Transmission Electron Microscopy and Selected Area Electron Diffraction. Results show that all synthesized nanoparticles present a single crystalline spinel phase without the appearance of undesirable byproducts. The nanoparticles present a non-stoichiometric Zn-Mn ferrite core, due to a Fe enrichment and a Zn loss with respect to the synthesis medium. The surface treatment of the nanoparticles induces a greater iron enrichment, which occurs at the nanoparticles surface without changing the crystalline structure. Finally, modifications in lattice parameters and strain suggest a contribution of the Mn 2+ cations, mainly related to their easy oxidation in the synthesis route, which increases the structural vacancies of Mn-richer ferrites.

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Improved microwave absorption properties of TiO2 and Ni0.53Cu0.12Zn0.35Fe2O4 nanocomposites potential for microwave devices

Cited by 40 publications

References 62 publications

Electromagnetic Property and Tunable Microwave Absorption of 3D Nets from Nickel Chains at Elevated Temperature

Electromagnetic Property and Tunable Microwave Absorption of 3D Nets from Nickel Chains at Elevated Temperature

Fabrication of novel silicon carbide‐based nanomaterials with unique hydrophobicity and microwave absorption property

Lattice Strain of Zn-Mn Mixed Ferrite Nanocrystals in a Core-Shell Morpho-Chemical Structure

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