Structural and Magnetic Properties of Nano Cu-Zn-Zr Ferrite for Magnetic Temperature Transducer (MTT)

Hemeda, O. M.; El-Shahawy, M. M.; Khedr, H

doi:10.9734/psij/2017/33042

Cited by 5 publications

(2 citation statements)

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“…The average crystallite size was estimated from the reflected peaks of the x-ray diffraction pattern using the Debye-Scherrer formula: it ranges from 22.4-24.7 nm for all samples [21]. Porosity P was calculated using the relation P 1 where M is the molecular weight, N is the Avogadro number, and a is the experimental lattice constant [22]. P was found to increase in the presence of Al atoms, despite the oscillating decrease of D values and stable decrease of x r values as Al content increases (see table 1).…”

Section: Resultsmentioning

confidence: 99%

The influence of aluminum’s crystalline structure on the elastic, dielectric, and electrical properties of Ni ferrite

Arrasheed¹,

Alibwaini²,

Meaz³

et al. 2022

Phys. Scr.

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The authors investigate the effect of Al on the structural, elastic, and electrical properties of a Ni nano ferrite. Six samples of NiAlxFe2-xO4 (where x= 0.00, 0.20, 0.40, 0.60, 0.80, and 1.00) were synthesized using flash auto combustion. As shown in XRD patterns, the lattice appears as a Fd-3m space group, a single-phase spinel structure with average crystallite size ranging from 22.4 - 24.7 nm for all samples. SEM and TEM images showed a uniform and spherical structural with a narrow size distribution. The results manifest significant changes in the elastic and electrical properties due to the presence of Al. As Al content increased, the bulk B, shear G, and Young E moduli decreased and remained in the same order of hundreds in the GPa range: however, the values of the Debye temperature θD increased. The dielectric parameters ε′, ε″, and tan δ decreased as the frequency of the applied field and Al content increased: they also decreased as temperature increased. The relaxation times were τ_ε=τ_tanδ=0.1959 μs for all samples. The electric moduli M′ and M″ increased as the frequency of the applied field and Al content increased, but they decreased as temperature increased. The relaxation times are dispersed depending on Al content, frequency, and temperature. The Cole-Cole curve showed two semicircles corresponding to the grain and grain boundary with the electrical relaxation of the non-Debye form. The electric impedance Z′ and Z″ increased as the frequency of the applied field and temperature increased, although they decreased as Al content increased. These results indicate that Ni-Al ferrite has respectable dielectric properties, which opens the door for many applications in control and safety monitoring tools, where dynamic process temperature sensors are of great importance and the temperature dependency of the material is significant.

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Section: Resultsmentioning

confidence: 99%

The influence of aluminum’s crystalline structure on the elastic, dielectric, and electrical properties of Ni ferrite

Arrasheed¹,

Alibwaini²,

Meaz³

et al. 2022

Phys. Scr.

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“…On the other hand, flexible composites of PANI have been reported due to their versatile applications. 23,24 In recent years nanocomposites based on conducting polymers and magnetic nanoparticles are widely studied by incorporating the magnetic nanoparticles in a conducting polymer matrix. Furthermore, the final properties of nanocomposites depend not only on the properties of the individual components but also on the homogeneity of the dispersibility of the nanoparticles, and the interfacial between the interacted components.…”

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Impact of Sm₂O₃ onthe Morphological, Optical, Magnetic, and Pesticide Adsorption of Co₃O₄/PANI Hybrid Nanocomposites

Wassel

Abdelhameed

Nasralla

et al. 2022

ECS J. Solid State Sci. Technol.

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Adsorption is one of the most favored procedures in advanced wastewater treatment. Magnetic hybrid materials have a great adsorption performance and excellent reusability in the industry. For this reason, the amazing roles of Sm2O3 doping on Co3O4/PANI hybrid nanocomposite materials were studied. Co3O4 nanoparticles were synthesized using the thermal decomposition technique where Sm2O3 doped Co3O4/ PANI hybrid nanocomposite materials were prepared via in situ oxidative polymerization. The X-ray analysis results confirm the successful formation of neat Co3O4 nanoparticles with cubic phase and its presence in emeraldine phase of PANI matrix. X-ray analysis also reveals that the crystallinity of hybrid nanocomposite materials increases with increasing Sm2O3 doping ratio. High-resolution transmission electron microscopy showed polycrystalline structure of Co3O4 nanoparticles and that the doped Sm2O3 was well incorporated and dispersed within the PANI matrix. The surfaces topography was studied by field-emission scanning electron microscopy. UV-Vis diffuse reflectance spectrum revealed two characteristic bands of PANI that are shifted towards higher wavelengths with Sm2O3 doping ratio. The calculated indirect energy gaps were found to decrease from 2.83–2.56 eV which indicates a good response of the hybrid nanocomposite materials to the effect of the UV absorption.

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Structural, cation distribution, thermal properties, and electrical resistivity of nano NiAlxFe2-xO4 synthesized by flash auto combustion method

Arrasheed

Alibwaini

Meaz

et al. 2021

Journal of Molecular Structure

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Structural and Magnetic Properties of Nano Cu-Zn-Zr Ferrite for Magnetic Temperature Transducer (MTT)

Cited by 5 publications

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The influence of aluminum’s crystalline structure on the elastic, dielectric, and electrical properties of Ni ferrite

The influence of aluminum’s crystalline structure on the elastic, dielectric, and electrical properties of Ni ferrite

Impact of Sm₂O₃ onthe Morphological, Optical, Magnetic, and Pesticide Adsorption of Co₃O₄/PANI Hybrid Nanocomposites

Structural, cation distribution, thermal properties, and electrical resistivity of nano NiAlxFe2-xO4 synthesized by flash auto combustion method

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Structural and Magnetic Properties of Nano Cu-Zn-Zr Ferrite for Magnetic Temperature Transducer (MTT)

Cited by 5 publications

References 0 publications

The influence of aluminum’s crystalline structure on the elastic, dielectric, and electrical properties of Ni ferrite

The influence of aluminum’s crystalline structure on the elastic, dielectric, and electrical properties of Ni ferrite

Impact of Sm2O3 onthe Morphological, Optical, Magnetic, and Pesticide Adsorption of Co3O4/PANI Hybrid Nanocomposites

Structural, cation distribution, thermal properties, and electrical resistivity of nano NiAlxFe2-xO4 synthesized by flash auto combustion method

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Product

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Impact of Sm₂O₃ onthe Morphological, Optical, Magnetic, and Pesticide Adsorption of Co₃O₄/PANI Hybrid Nanocomposites