Microstructural and electromagnetic study of low temperature fired nano crystalline MgCuZn ferrite with Bi2O3 addition

Bahiraei, Hamed; Ong, C. K.

doi:10.1016/j.ceramint.2016.11.202

Cited by 21 publications

(5 citation statements)

References 21 publications

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“…The initial permeability is in uenced by compositions, impurity contents, preparation methods, grain size, saturation magnetization, magnetostriction [17,22]. The µ values reported by Roy et al [12] and Thorat et al [11] are higher than those obtained for the Ni 1-x (Zn 0.6 Mg 0.2 Cu 0.2 ) x Fe 2 O 4 in the present investigation.…”

Section: Analysis Of Magnetic Performancecontrasting

confidence: 48%

Effect of zinc, magnesium, and copper substitutions on the initial permeability of nickel ferrite

Shafiee¹,

Arab²,

Riahi-Nouri³

2020

Preprint

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Zinc, magnesium, and copper substituted nickel spinel ferrite were synthesized in the form of Ni1 − x (Zn06Mg0.2Cu0.2) x Fe2O4 (where x = 0.0, 0.3, 0.5 and 0.7) via auto combustion method. The effect of the presence of these dopants on the average of crystallite, average particle size, the lattice constant, morphology, initial permeability, and magnetization of the synthesized ferrites was investigated. The structural properties, morphology, and magnetic properties were characterized via X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), LCR meter and alternative gradient force magnetometer (AGFM). XRD study shows the formation of a single-phase cubic spinel structure. Also, the average crystallite size was found to increase from 6 nm to 11 nm with increasing the Zn2+, Mg2+, and Cu2+ doping ratio from 0.0 to 0.7. Moreover, FE-SEM results were indicated the presence of nanosized spherical shape of prepared particles with agglomeration. The lattice constant and the particle size were found to increase with the increase in Zinc, magnesium, and copper. The values of initial permeability and magnetization were increased to a maximum value of 76 H/M and 71.37 emu/g for x = 0.7 sample. Furthermore, coercivity was found to decrease with increasing Zinc, magnesium, and copper concentration, which is useful for power applications. The variations of initial permeability and magnetization as a function of average particle size were discussed and were compared with previous works. The results were indicated the increase in initial permeability and magnetization with the enhancement of average particle size. The constancy in permeability throughout the frequency range studied from 10 kHz to1 MHz was indicated the compositional stability and quality of the samples. The results were indicated that the ferrites with high initial permeability can be an excellent choice as magnetic cores.

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Section: Analysis Of Magnetic Performancecontrasting

confidence: 48%

Effect of zinc, magnesium, and copper substitutions on the initial permeability of nickel ferrite

Shafiee¹,

Arab²,

Riahi-Nouri³

2020

Preprint

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“…Although some additives deteriorate the magnetic properties of the ferrites, the choice of suitable sintering aid is a very actual problem to achieve synthetically low sintering temperature and high permeability [5,6]. It is shown that the single sintering aid declines the sintering temperature of ferrites due to the liquid phase formation [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of MoO3 additive on grain growth and magnetic properties of Mg0.3Cu0.2Zn0.5Fe2O4 ceramics sintered at low temperature

Bahiraei

Ong

2021

J Mater Sci: Mater Electron

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In this research paper, microstructural, electromagnetic properties, and thermal stability, of (Mg 0.3 Cu 0.2 Zn 0.5 O) (Fe 2 O 3 ) ceramics were adjusted by using lowmelting point molybdenum trioxide (MoO 3 ) as additive. The required ferrite powders were synthesized through a cost-effective sol-gel method. The ferrite ceramics with high density and high permeability were prepared, using various content of MoO 3 (from 0.00 to 1.00 wt%) at low sintering temperature. Results indicate that MoO 3 not only improves density and grain growth of ferrite samples, but also effectively tailors the saturation magnetization (M s ), coercive field strength (H c ), initial permeability (l i ), and Curie temperature (T C ). For a qualitative comparison, the SEM images of both surface and fracture surface of the specimens were obtained. The results indicate that 0.25 wt% MoO 3 can promote grain growth, densification and uniformity, and reduce pores between grains of the sintered sample. In particular, MgCuZn ferrite with high bulk density (q = 4.7 g/cm 3 ), high initial permeability (l 0 = 460), high saturation magnetization (M s = 50.6 emu/g), and low coercivity (H c = 1.4 Oe) are obtained when the content of additive is 0.25 wt%. However, the excessive amount of MoO 3 deteriorates the grain size uniformity and weakens the magnetic properties due to the production of non-magnetic MoO 3 liquid phase.

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“…One of the promising candidates in modern alternative energy as the basis of solid fuel elements are perovskite-like systems based on RFeO 3 ferrite (R = Ce, Y, Ba, Sr) [14,15,16,17,18]. The increased interest in this class of structures is due to their distorted crystal structure with the possibility of filling vacancies with equivalent iron ions [19], which has an essential impact on the structural, optical, magnetic, and dielectric properties [20,21,22,23]. However, the presence of magnetic domains in the structure of ferrite systems allows using them as magneto optical sensors, catalysts, and devices for long-term data storage [24,25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Ferrite-Based Nanoparticles

et al. 2019

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The work is dedicated to the study of the structural and optical characteristics, as well as the phase transformations, of ferrite nanoparticles of CeO2-Fe2O3. To characterize the results obtained, the methods of scanning and transmission microscopy, X-ray diffraction (XRD) spectroscopy, and Mössbauer spectroscopy were applied. It was found that the initial nanoparticles are polycrystalline structures based on cerium oxide with the presence of X-ray amorphous inclusions in the structure, which are characteristic of iron oxide. The study determined the dynamics of phase and structural transformations, as well as the appearance of a magnetic texture depending on the annealing temperature. According to the Mossbauer spectroscopy data, it has been established that a rise in the annealing temperature gives rise to an ordering of the magnetic properties and a decrease in the concentration of cationic and vacancy defects in the structure. During the life test of synthesized nanoparticles as cathode materials for lithium-ion batteries, the dependences of the cathode lifetime on the phase composition of nanoparticles were established. It is established that the appearance of a magnetic component in the structure result in a growth in the resource lifetime and the number of operating cycles. The results show the prospects of using these nanoparticles as the basis for lithium-ion batteries, and the simplicity of synthesis and the ability to control phase transformations opens up the possibility of scalable production of these nanoparticles for cathode materials.

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Microstructural and electromagnetic study of low temperature fired nano crystalline MgCuZn ferrite with Bi2O3 addition

Cited by 21 publications

References 21 publications

Effect of zinc, magnesium, and copper substitutions on the initial permeability of nickel ferrite

Effect of zinc, magnesium, and copper substitutions on the initial permeability of nickel ferrite

Influence of MoO3 additive on grain growth and magnetic properties of Mg0.3Cu0.2Zn0.5Fe2O4 ceramics sintered at low temperature

Synthesis and Properties of Ferrite-Based Nanoparticles

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