Impact of cerium substitution cobalt–zinc spinel ferrites for the applications of high frequency devices

Khan, Noor-ul-Haq; Gilani, Zaheer Abbas; Khalid, Muhammad; Asghar, H. M. Noor ul Huda Khan; Hussain, Gulzar; Shar, Muhammad Ali; Ali, Syed Mansoor; Khan, Muhammad Azhar; Sheikh, Furhaj Ahmed; Alhazaa, Abdulaziz

doi:10.1016/j.physb.2023.414873

Cited by 17 publications

(2 citation statements)

References 81 publications

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“…The curves in the figure show that the dielectric constant (ε / ) decreases with increasing frequency for all samples. This is suitable for high-frequency device applications [77][78][79]. It is observed that the conductivity increases with increasing concentration of cerium ions in the prepared CNZ samples and with the frequency.…”

Section: Dielectric and Electrical Propertiesmentioning

confidence: 93%

Enhancement of Ni–Zn ferrite nanoparticles parameters via cerium element for optoelectronic and energy applications

Kershi,

Alshehri,

Attiyah

2023

Discover Nano

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This work is concerned with fabricating ferrite nanoparticles of nickel–zinc with the chemical formula: Ni0.55Zn0.45Fe2−xCexO4, 0 ≤ x ≤ 0.011 by co-deposition technique and modifying their electrical, microscopic, spectroscopic, optical, electrical and dielectric properties as advanced engineering materials through doping with the cerium (Ce) element. XRD patterns displayed that the samples have a monophasic Cerium–Nickel–zinc (CNZ) spinel structure without other impurities for cerium concentration (x) ≤ 0.066. Both values of crystallite size and lattice parameters decrease from 33.643 to 23.137 nm and from 8.385 to 8.353 nm, respectively, with the increasing Ce ions substitution content from 0 to 0.066. SEM images indicate that grains of the fabricated compounds are smaller, more perfect, more homogeneous, and less agglomeration than those of the un-doped Ni–Zn nano-ferrites. The maximum intensity of first-order Raman spectral peaks (Eg, F2g(2), A1g(2), and A1g(1)) of CNZ ferrite nanoparticles are observed at about (330, 475, 650, 695) cm−1, respectively, that confirms the CNZ samples have the cubic spinel structure. The direct and indirect optical energy bandgaps of CNZ samples have a wide spectrum of values from semiconductors to insulators according to cerium concentration. The results showed that the values of dielectric constant, dielectric loss factor, and Ac conductivity and the conductivity transition temperature are sensitive to cerium ions content. AC conductivity exhibited by the CNZ samples has the semiconductor materials behavior, where the AC conductivity increases due to temperature or doping concentration. The results indicate that Ni0.55Zn0.45Fe1.944Ce0.066O4 ferrite nanoparticles may be selected for optoelectronic devices, high-frequency circuits, and energy storage applications.

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Section: Dielectric and Electrical Propertiesmentioning

confidence: 93%

Enhancement of Ni–Zn ferrite nanoparticles parameters via cerium element for optoelectronic and energy applications

Kershi,

Alshehri,

Attiyah

2023

Discover Nano

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“…Nanoscale ferromagnetic particles have garnered significant attention in both scientific research and practical applications due to their distinctive properties and diverse uses [1][2][3]. These particles find application in various fields, such as high-density magnetic storage devices [4], gas sensors [5], and spintronics [6], serving as essential components in microwave and nanowave devices [7].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Reaction Medium pH on the Structure, Optical, and Mechanical Properties of Nanosized Cu-Fe Ferrite Synthesized by the Sol-Gel Autocombustion Method

Mazurenko,

Kaykan,

Sijo

et al. 2023

JNanoR

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Nanoscale mixed ferrites with a spinel structure are highly versatile materials widely employed across diverse fields, including engineering, biomedicine, and ecology. This study explores the influence of pH on the structure, morphology, electrophysical, and mechanical properties of CuFe2O4 spinel, synthesized using the sol-gel self-combustion method. The investigation reveals that the pH level significantly impacts the structure formation, even at the gel formation stage, thereby shaping the subsequent structure and properties of the synthesized ferrite. X-ray diffraction (XRD) analysis demonstrates that the dominant phase (>90%) corresponds to the cubic spinel phase with the chemical formula CuFe2O4, belonging to the Fd3m space group. Notably, the pH of the reaction medium exerts a profound influence on the distribution of iron and copper ions within the octahedral and tetrahedral sublattices of the spinel structure. This variation in cationic distribution manifests in notable changes in the synthesized ferrite's magnetic, mechanical, and degradation properties. Furthermore, the study delves into the impact of the synthesized CuFe2O4 spinel as a photocatalyst for degrading organic dyes through the photo-Fenton process. It demonstrates that degradation efficiency is closely related to the ferrite's band gap width and particle size. This study aimed to determine how the pH of the reaction medium impacts the structure, morphology, optical, mechanical, and magnetic characteristics of the nanosized ferrites being synthesized. Furthermore, the synthesized materials were evaluated for their photocatalytic abilities in degrading organic dyes in water. The ferrite powders showcased remarkable dye degradation capabilities via the photo-Fenton process. Degradation efficiency largely hinged on the band gap width and the size of the particles. The most notable outcome was achieved with sample P1, which had particle sizes averaging 12.14 nm. By unraveling the complex relationship between pH, structure, and properties, this research enhances our understanding of the design and optimization of nanoscale mixed ferrites.

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Structural, cation distribution, mechanical, and optical properties of rare-earth doped cadmium zinc ferrites

Korek,

Habanjar,

Awad

2024

Appl. Phys. A

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Impact of cerium substitution cobalt–zinc spinel ferrites for the applications of high frequency devices

Cited by 17 publications

References 81 publications

Enhancement of Ni–Zn ferrite nanoparticles parameters via cerium element for optoelectronic and energy applications

Enhancement of Ni–Zn ferrite nanoparticles parameters via cerium element for optoelectronic and energy applications

The Influence of Reaction Medium pH on the Structure, Optical, and Mechanical Properties of Nanosized Cu-Fe Ferrite Synthesized by the Sol-Gel Autocombustion Method

Structural, cation distribution, mechanical, and optical properties of rare-earth doped cadmium zinc ferrites

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