Effect of holmium substitution on the structural, magnetic and transport properties of CoFe2-xHoxO4 ferrites

Karimunnesa, Syeda; Ullah, A. K. M. Atique; Hasan, Mahmudul; Shanta, F. S.; Islam, Rashidul; Khan, M. N. I.

doi:10.1016/j.jmmm.2018.02.077

Cited by 30 publications

(4 citation statements)

References 39 publications

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“…The uniformity in the grain size and average D can control materials properties such as the magnetic permeability. The behavior of grain growth reflects the competition between the driving force for grain boundary movement and the retarding force exerted by the pores [18].…”

Section: Resultsmentioning

confidence: 99%

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Islam

Rahaman

Hasan

et al. 2019

Heliyon

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The effect of sintering temperature (T S ) on the structural and magnetic properties of Li 0.15 Ni 0.3 Zn 0.4 Fe 2.15 O 4 is investigated and discussed. The sample is synthesized by the sol-gel auto combustion method and sintered at 1373–1573 K for 5 h. Phase identification of the powder sample was performed by using the X-ray diffraction (XRD). The XRD patterns confirmed the formation of single phase cubic spinel structure. The bulk density is correlated with T S . From the energy-dispersive X-ray spectroscopy study, it is observed that the percentage of the elements in the component phases is well consistent with the nominal composition of the composites. Field Emission Scanning Electron Microscopy showed that the average grain size (D) is increased with increasing T S . The frequency (100 Hz–120 MHz) dependent complex initial permeability spectra and relative quality factor increased with sintering temperature up to 1523 K then decreased for further increase in temperature. The complex initial permeability has been explained with the help of microstructure, and the redistribution of cations in their sites.

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Section: Resultsmentioning

confidence: 99%

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Islam

Rahaman

Hasan

et al. 2019

Heliyon

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“…Additionally, a study of the material's complicated dielectric properties and its refractive index in relation to incident eld frequency uctuations is presented. Additionally, LNMO has been investigated for some time as a material for next-generation electronic devices since it has simultaneous electrical and magnetic order [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Structural, Impedance Spectroscopy, and Electrical Properties in BiBaNiMnO6 Double Perovskite for some Device Applications

Nassar

Tayari

Slimi

et al. 2022

Preprint

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Due to potential technological applications in a variety of industries, including electronic devices, telecommunications, magnetism, and the health sector, double perovskite materials have attracted a lot of attention from researchers in recent years. In this article, we develop a new BiBaNiMnO6 is a chemical compound studies of the structural and electrical characteristics of the sol-gel-produced double perovskite material have been discussed under various experimental circumstances. The creation of a single-phase, space group R3̅C, secondary phase-free rhombohedral system is confirmed by the room temperature X-ray diffraction study. Dielectric, impedance, conductivity, and modulus of the sample were all tested at different temperatures (100-360K) and frequencies (1kHz-1MHz), and the results reveal numerous surprising properties of the material. Electrical impedance analysis reveals that the sample is represented by an equivalent electrical circuit that is connected in parallel and contains a resistance, capacitance, and a fractal capacitance CPE. Semicircles of Nyquist plots provide evidence that the material exhibits non-Debye type relaxation behavior. There is a relaxation process in the material, as demonstrated by the analysis of the complex modulus approach, the real and imaginary component as a function of frequency for various temperatures. The Jonscher's power law's detailed investigation of the frequency dependence of conductivity at various temperatures reveals a thermally the conduction mechanism is activated. Electrical conductivity and modulus activation energies are very near, suggesting that the relaxation and conduction processes use the same sort of charge carrier. The two models of conduction are correlated barrier hopping (CBH) and non-overlapping small-polaron tunneling (NSPT). Electrical properties of the produced material are really intriguing. Knowing that capacitors can be employed in electrical fields.

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“…Spinel ferrite with formula AB 2 O 4 has a cubic structure, where A and B indicate the tetrahedral and octahedral sites, respectively . Spinel ferrite contains 56 atoms in each unit cell distributed among A and B sites. , The significance of spinel ferrite is because of its wide range of industrial and scientific applications; chemical stability; and the engineering feasibility of tuning its electrical, magnetic, and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Structural, Magnetic, and Mossbauer Parameters’ Evaluation of Sonochemically Synthesized Rare Earth Er³⁺and Y³⁺Ions-Substituted Manganese–Zinc Nanospinel Ferrites

et al. 2021

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The effect of Er 3+ and Y 3+ ion-co-substituted Mn 0.5 Zn 0.5 Er x Y x Fe 2–2 x O 4 (MZErYF) ( x ≤ 0.10) spinel nanoferrites (SNFs) prepared by a sonochemical approach was investigated. Surface and phase analyses were carried out using SEM, TEM, and XRD. Hyperfine parameters were determined by fitting room-temperature (RT) Mossbauer spectra. Magnetic field-dependent magnetization data unveiled the superparamagnetic nature at RT and ferrimagnetic nature at 10 K. RT saturation magnetization ( M S ) and calculated magnetic moments ( n B ) are 34.84 emu/g and 1.47 μ B , respectively, and have indirect proportionalities with increasing ion content. M S and n B data have a similar trend at 10 K including remanent magnetizations ( M r ). The measured coercivities ( H C ) are between 250 and 415 Oe. The calculated squareness ratios are in the range of 0.152–0.321 for NPs and assign the multidomain nature for NPs at 10 K. The extracted effective magnetocrystalline constants ( K eff ) have an order of 10 4 erg/g except for Mn 0.5 Zn 0.5 Er 0.10 Y 0.10 Fe 1.80 O 4 SNFs that has 3.37 × 10 5 erg/g. This sample exhibits the greatest magnetic hardness with the largest magnitude of H C = 415 Oe and an internal anisotropy field H a = 1288 Oe among all magnetically soft NPs.

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Effect of holmium substitution on the structural, magnetic and transport properties of CoFe2-xHoxO4 ferrites

Cited by 30 publications

References 39 publications

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Structural, Impedance Spectroscopy, and Electrical Properties in BiBaNiMnO6 Double Perovskite for some Device Applications

Structural, Magnetic, and Mossbauer Parameters’ Evaluation of Sonochemically Synthesized Rare Earth Er³⁺and Y³⁺Ions-Substituted Manganese–Zinc Nanospinel Ferrites

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Effect of holmium substitution on the structural, magnetic and transport properties of CoFe2-xHoxO4 ferrites

Cited by 30 publications

References 39 publications

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Structural, Impedance Spectroscopy, and Electrical Properties in BiBaNiMnO6 Double Perovskite for some Device Applications

Structural, Magnetic, and Mossbauer Parameters’ Evaluation of Sonochemically Synthesized Rare Earth Er3+and Y3+Ions-Substituted Manganese–Zinc Nanospinel Ferrites

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Structural, Magnetic, and Mossbauer Parameters’ Evaluation of Sonochemically Synthesized Rare Earth Er³⁺and Y³⁺Ions-Substituted Manganese–Zinc Nanospinel Ferrites