Dielectric and electrical study of zinc copper ferrite nanoparticles prepared by exploding wire technique

Humidity sensor plays a crucial role in determining the efficiency of materials and the precision of apparatuses. To measure and control humidity, a non-stoichiometric Li1.1Co0.3Fe2.1O4 mesopores sensor is synthesized by a modified citrate auto combustion technique. The XRD study confirms that prepared nanoparticles are cubic spinel structures having Fd3m space group. The crystallite size is approximate 36 nm. Thermal analyses measurements confirm that the samples become thermally stable starting from 600 °C. Additionally, the kinetic studies of the prepared samples are calculated via a pseudo-first-order kinetic model. The temperature dependence of AC conductivity is found to increase with increasing the temperature. These observations are explained in various models. The resistivity mechanism of humidity sensors is studied via Complex impedance spectroscopy (CIS). Its impedance data is fitting to a corresponding circuit, to achieve a simulation of the sample under study. This fitting is detected by the Nyquist plot (Cole-Cole). The obtained data confirms that the studied samples are very sensitive to humidity and can be commercially used as a humidity sensing element.

show abstract

“…Li1.1Co0.3Fe2.1O4 as a function of the absolute temperature. The ac obeyed the power law that was discussed previously [22].…”

Section: Tablementioning

confidence: 72%

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

ElFarhatey

Ateia

Mosry³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Similarly, at lower frequencies, the atoms, ions, electrons, and dipoles undergo polarization, which leads to high permittivity and loss values. , The temperature-dependent AC electrical conductivity measurement was carried out and is shown in Figure c. Additionally, this pattern of the AC conductivity also satisfies the Arrhenius relation, σ = σ 0 e – E / KT , where k is the Boltzmann constant, σ o is a constant depending on the material, T is the absolute temperature, and E is the activation energy . It is known that the hopping of charges in the material is responsible for the conductivity and the conductivity increases with enhancement in the temperatures. , The above studied temperature- and frequency-dependent dielectric parameters of the CST nanostructure exhibit good results, as compared to bare CS and CT.…”

Section: Results and Discussionmentioning

confidence: 96%

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe_1–xTe_1+x for Optoelectronic and Dielectric Applications

Das¹,

Senapati²,

Pradhan

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Transition metal chalcogenides have gained significant attention for their optoelectronic and electrical applications in various fields due to their elemental composition-dependent tunable properties. Here, a facile microwave-assisted approach was used to synthesize different CuSe1–x Te1+x -based nanomaterials. By varying the Se and Te concentrations, the morphology of CuSe1–x Te1+x was tuned from nanosheet-based flowers to nanospheres. With the increase in the value of the Te-to-Se content ratio, the material shows the transition from mixed nanosheets/nanospheres to pure nanospheres, where the average sheet thickness and sphere diameter are ∼25 and 80 nm, respectively. The as-synthesized material shows high crystallinity with mixed phases of hexagonal Cu2Te and CuSe. The chemical bonding of the material exhibits shifts of the spectra toward lower binding energies with the decrease in the Se-to-Te ratio. The material exhibits a change in the absorption edge with a blue shift of the optical bandgap for the increase of the Te content. The increment in the absorption makes them eligible for solar cell application. The photoluminescence spectra of different CuSeTe samples show broad emission in the 550–950 nm range with a peak at ∼700 nm. Such optical properties enable CuSeTe materials for possible applications in optoelectronic devices. The dielectric measurement of the sample exhibits an increase in the dielectric constant and loss with temperature, whereas a decrease in both the values is apparent for increase in the frequency. The dielectric study of the material reveals its potential application for energy storage. The photo-response study demonstrated that the material can be employed for photodetector application.

show abstract

“…Hopping of those charge carriers can occur at the octahedral sites because distances are smaller than between and sites [ 46 ].…”

Section: Resultsmentioning

confidence: 99%

Delving into the properties of nanostructured Mg ferrite and PEG composites: A comparative study on structure, electrical conductivity, and dielectric relaxation

El-Ghazzawy,

Zakaly,

Alrowaily

et al. 2023

Heliyon

View full text Add to dashboard Cite

Dielectric and electrical study of zinc copper ferrite nanoparticles prepared by exploding wire technique

Cited by 24 publications

References 53 publications

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe_1–xTe_1+x for Optoelectronic and Dielectric Applications

Delving into the properties of nanostructured Mg ferrite and PEG composites: A comparative study on structure, electrical conductivity, and dielectric relaxation

Contact Info

Product

Resources

About

Dielectric and electrical study of zinc copper ferrite nanoparticles prepared by exploding wire technique

Cited by 24 publications

References 53 publications

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe1–xTe1+x for Optoelectronic and Dielectric Applications

Delving into the properties of nanostructured Mg ferrite and PEG composites: A comparative study on structure, electrical conductivity, and dielectric relaxation

Contact Info

Product

Resources

About

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe_1–xTe_1+x for Optoelectronic and Dielectric Applications