Structural, optical, and magnetic properties of Ni1 − xZrxFe2O4 nanostructures prepared by sol–gel synthesis

Gholipur, Reza

doi:10.1007/s00339-022-05435-x

Cited by 11 publications

(7 citation statements)

References 39 publications

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“…One approach to creating these absorbers involves using dielectric ceramics as a foundation, which have shown promising potential. Additionally, magnetic metal powders have also been investigated, , along with magnetic metals and their alloys, , as potential materials for electromagnetic wave absorbers. These metallic options have demonstrated intriguing properties that make them worth exploring further.…”

Section: Introductionmentioning

confidence: 99%

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS₂)_x Nanocomposites

Gholipur,

Khosravi

2024

Langmuir

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Transition metal sulfides (TMDs) possess exceptional dielectric properties and a narrow band gap, rendering them highly efficient as electromagnetic absorbing materials. Among these TMDs, the two-dimensional MoS 2 nanosheet has received significant attention in research. However, the quest for new absorbers no longer finds satisfaction in solitary absorption mechanisms. This article introduces a successful method for creating PVA/NiFe 2 O 4 /(MoS 2 ) x nanocomposites via a straightforward sol−gel technique, wherein porous amorphous NiFe 2 O 4 microspheres are integrated into MoS 2 nanosheets. The investigation uncovers that the incorporation of MoS 2 results in an enhanced complex permittivity, facilitating the attainment of a desirable permittivity level. The PVA/NiFe 2 O 4 /(MoS 2 ) x nanocomposite absorber exhibits an incredibly low reflection loss (RL) of −16.75 dB at a mere thickness of 1 mm, achieved through the cooperative interaction of dielectric and magnetic loss, along with the advantages of the structure and composition. Consequently, the PVA/NiFe 2 O 4 /(MoS 2 ) x nanocomposites effectively absorb electromagnetic waves. Therefore, it is posited that MoS 2 -based composites hold great promise as highly effective microwave absorbers, boasting strong absorption intensity and a wide absorption frequency range, given the exceptional performance of the as-fabricated PVA/NiFe 2 O 4 /(MoS 2 ) x nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS₂)_x Nanocomposites

Gholipur,

Khosravi

2024

Langmuir

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“…As a result, it is crucial for us to explore the advancements in electromagnetic absorbing materials that can provide excellent performance in mitigating these risks. In order to accomplish this, it is essential to concentrate on developing suitable components and microstructures. − These specific materials hold promise in serving as radar-absorbing substances, particularly within the domain of stealth technology. Ideal absorption materials should possess certain characteristics in order to meet the demands of practical applications.…”

Section: Introductionmentioning

confidence: 99%

Flexible PVA/Co Ferrite/MWCNT/AC Metacomposites: High Conductivity and Low Percolation Threshold

Gholipur,

Afrouzeh

2024

ACS Appl. Electron. Mater.

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Recently, metacomposites have emerged as a promising solution for electromagnetic wave absorption due to their extraordinary electromagnetic parameters. However, the underlying paradigm and regulation mechanism for the negative and near-zero responses of real permittivity are still not clearly understood. To address this gap, this study focuses on the development of metacomposites comprising poly(vinyl alcohol) (PVA), Co ferrite, multiwalled carbon nanotubes (MWCNT), and activated carbon (AC) using a cost-effective sol−gel method based on percolation theory. An in-depth analysis of the materials revealed that the combination of a porous structure and magnetic nanoparticles in the carbon matrix had a synergetic effect. This synergistic effect resulted in a remarkable improvement in the impedance matching conditions and attenuation ability of the metacomposites. Interestingly, as the frequency increased, the value of the real permittivity switched from positive to negative in PVA/Co ferrite/MWCNT/AC metacomposites. This phenomenon can be explained by the electrical dipole resonance of the interconnected MWCNTs. As a result, the metacomposites displayed excellent electromagnetic wave absorption performance, with the electromagnetic absorption capacity significantly enhanced to −28.1095 dB for a thickness of 1 mm. Such a high level of reflection loss (RL) indicates that these metacomposites have the capability to attenuate all incoming electromagnetic radiation. Consequently, these metacomposites hold great potential for various modern devices that require highly efficient, stable, adjustable, and lightweight absorption capabilities such as memristors, light-dependent resistances, and low-frequency reflectors.

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“…Nevertheless, this progress has also brought about a range of other issues that need to be addressed, including energy scarcity, environmental pollution, and information security. [1][2][3][4][5] Due to its exceptional electromagnetic characteristics, the electromagnetic wave has the ability to be assimilated through both dielectric loss and magnetic loss. This particular capability serves as the chief source of guidance and inspiration for the development and design of electromagnetic wave absorbers.…”

Section: Introductionmentioning

confidence: 99%

“…The development and improvement of communication devices and radar systems have raised significant concerns about the potential negative impact of electromagnetic radiation on human health as well as on various telecommunication devices. Nevertheless, this progress has also brought about a range of other issues that need to be addressed, including energy scarcity, environmental pollution, and information security [1–5] . Due to its exceptional electromagnetic characteristics, the electromagnetic wave has the ability to be assimilated through both dielectric loss and magnetic loss.…”

Section: Introductionmentioning

confidence: 99%

Flexible PVA/Mn Ferrite/(MoS₂)_x Nanocomposites With Electromagnetic Wave Absorption Performance for Light Dependent Resistances

Gholipur,

Tofangchi

2024

ChemistrySelect

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The presence of electromagnetic pollution not only poses a threat to human health but also disrupts the proper functioning of large‐scale machinery. In light of this, a novel method involving sol–gel techniques was utilized to synthesize PVA/Mn Ferrite/(MoS2)x nanocomposites, which exhibit remarkable electromagnetic wave absorption properties. By intelligently combining MoS2 with PVA/Mn Ferrite, the composite's electromagnetic parameters were optimized, leading to enhanced impedance matching. As a result, the PVA/Mn Ferrite/(MoS2)x nanocomposites showcased an exceptional minimum reflection loss of −15.971 dB at a thickness of 1 mm. The remarkable capability of absorbing substances can primarily be attributed to the outstanding synergistic interaction between PVA/Mn Ferrite and MoS2. Additionally, MoS2 also plays a significant role in generating dielectric loss and achieving ideal impedance matching. As a result, the potential applications of PVA/Mn Ferrite/(MoS2)x nanocomposites extend to serving as both absorption materials and light dependent resistance (LDR) sensors. These nanocomposites exhibit not only high efficiency but also possess the added advantages of flexibility and lightweight properties, further enhancing their desirability.

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Structural, optical, and magnetic properties of Ni1 − xZrxFe2O4 nanostructures prepared by sol–gel synthesis

Cited by 11 publications

References 39 publications

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS₂)_x Nanocomposites

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS₂)_x Nanocomposites

Flexible PVA/Co Ferrite/MWCNT/AC Metacomposites: High Conductivity and Low Percolation Threshold

Flexible PVA/Mn Ferrite/(MoS₂)_x Nanocomposites With Electromagnetic Wave Absorption Performance for Light Dependent Resistances

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Structural, optical, and magnetic properties of Ni1 − xZrxFe2O4 nanostructures prepared by sol–gel synthesis

Cited by 11 publications

References 39 publications

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS2)x Nanocomposites

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS2)x Nanocomposites

Flexible PVA/Co Ferrite/MWCNT/AC Metacomposites: High Conductivity and Low Percolation Threshold

Flexible PVA/Mn Ferrite/(MoS2)x Nanocomposites With Electromagnetic Wave Absorption Performance for Light Dependent Resistances

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Product

Resources

About

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS₂)_x Nanocomposites

Structural, Magnetic, and Electrical Investigations of PVA/Ni Ferrite/(MoS₂)_x Nanocomposites

Flexible PVA/Mn Ferrite/(MoS₂)_x Nanocomposites With Electromagnetic Wave Absorption Performance for Light Dependent Resistances