Study of the structural, electrical, dielectric properties and transport mechanisms of Cu0.5Fe2.5O4 ferrite nanoparticles for energy storage, photocatalytic and microelectronic applications

Heda, I. El; Dhahri, R.; Massoudi, J.; Dhahri, E.; Bahri, F.; Khirouni, K.; Costa, B.F.O.

doi:10.1016/j.heliyon.2023.e17403

Cited by 9 publications

(1 citation statement)

References 82 publications

(98 reference statements)

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“…For this reason, in the present paper, the determination of the electrical conductivity (σ) and the complex dielectric permittivity (ε) in the low-frequency field for Zn x Mn 1−x Fe 2 O 4 compounds as well as the experimental studies regarding the frequency and temperature dependence of σ and ε are very important. Knowledge of the electrical and dielectric properties of these materials, in addition to their magnetic properties, is very useful in applications such as energy storage, photocatalytic applications [17], or microelectronic applications such as power electronics-integrated LC filters [18]. In this context, the experimental measurements of electrical conductivity and complex dielectric permittivity are very useful to obtain information regarding the possibility of using these materials in various applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on the Electrical Conductivity and Complex Dielectric Permittivity of ZnxMn1−xFe2O4 (x = 0 and 0.4) Ferrites in a Low-Frequency Field

Malaescu,

Sfirloaga,

Marin

et al. 2024

Crystals

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Two samples of ZnxMn1−xFe2O4 (x = 0, sample A; and x = 0.4, sample B) were synthesized by the hydrothermal method. From complex impedance measurements in the range 100 Hz–2 MHz and for temperatures T between 30 and 130 °C, the barrier energy between localized states ΔErelax was determined for the first time in these samples. For sample B, a single value of ΔErelax was highlighted (0.221 eV), whilst, for sample A, two values were obtained (0.012 eV and 0.283 eV, below 85 °C and above 85 °C, respectively), associated with two zones of different conductivities. Using the Mott’s VRH model and the CBH model, we determined for the first time both the bandgap energy barrier (Wm) and the hopping (crossover) frequency (ωh), at various temperatures. The results show that, for sample A, Wm has a maximum equal to 0.72 eV at a temperature between 70 and 80 °C, whilst, for sample B, Wm has a minimum equal to 0.28 eV at a temperature of 60 °C, the results being in good agreement with the temperature dependence of the static conductivity σDC(T) of the samples. By evaluating σDC and eliminating the conduction losses, we identified, using a novel approach, a dielectric relaxation phenomenon in the samples, characterized by the activation energy EA,rel. At various temperatures, we determined EA,rel, which ranged from 0.195 eV to 0.77 eV. These results are important, as understanding these electrical properties is crucial to various applications, especially in technologies where temperature variation is significant.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigations on the Electrical Conductivity and Complex Dielectric Permittivity of ZnxMn1−xFe2O4 (x = 0 and 0.4) Ferrites in a Low-Frequency Field

Malaescu,

Sfirloaga,

Marin

et al. 2024

Crystals

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Effect of Copper Substitution on Structural, Electrical, and Magnetic Properties of Nanocrystalline Cobalt Ferrites for Memory Storage Applications

Ramesh,

Venkatesh

2024

Physica Status Solidi (b)

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Cu2+‐ion‐doped cobalt ferrites with the chemical formula Co1–xCuxFe2O4 (0 < x ≤ 0.20) are prepared using the citrate–nitrate autocombustion method. The structural properties of the synthesized samples are examined by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy. The XRD studies reveal the formation of a single‐phase spinel cubic structure. A slight variation in the peak position is observed with the addition of Cu2+ ions. The proposed cation distribution is supported by X‐ray relative intensity calculations. FTIR and Raman spectroscopy studies also confirm the formation of a single‐phase cubic structure. Field‐emission scanning electron microscopy (FESEM) is used to measure the surface properties of the samples. The FESEM images reveal nearly uniform‐sized grains with the addition of Cu2+ ions. The DC electrical resistivity is determined using the conventional two‐probe technique and is typically found within the range of 106 Ω cm−1. Dielectric measurements are performed using an impedance analyzer with 100 Hz–10 MHz frequency range and the variations in the dielectric properties are discussed. The magnetic properties are measured using a vibrating sample magnetometer conducted the magnetic measurements. The uneven variations in the magnetic properties are explained based on Neel's two‐sublattice model.

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Investigation effect of Cr3+ substituted on enhanced dielectric and magnetic properties of co-cu nano ferrites for high-density data storage applications

Rao,

Shanmukhi,

Mammo

et al. 2024

Appl. Phys. A

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Study of the structural, electrical, dielectric properties and transport mechanisms of Cu0.5Fe2.5O4 ferrite nanoparticles for energy storage, photocatalytic and microelectronic applications

Cited by 9 publications

References 82 publications

Experimental Investigations on the Electrical Conductivity and Complex Dielectric Permittivity of ZnxMn1−xFe2O4 (x = 0 and 0.4) Ferrites in a Low-Frequency Field

Experimental Investigations on the Electrical Conductivity and Complex Dielectric Permittivity of ZnxMn1−xFe2O4 (x = 0 and 0.4) Ferrites in a Low-Frequency Field

Effect of Copper Substitution on Structural, Electrical, and Magnetic Properties of Nanocrystalline Cobalt Ferrites for Memory Storage Applications

Investigation effect of Cr3+ substituted on enhanced dielectric and magnetic properties of co-cu nano ferrites for high-density data storage applications

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