New LiCo0.5PrxFe2−xO4 nanoferrites: Prepared via low cost technique for high density storage application

Gilani, Zaheer Abbas; Shifa, Muhammad Shahzad; Asghar, H. M. Noor ul Huda Khan; Khan, Muhammad Azhar; Anjum, Muhammad Naeem; Usmani, Muhammad Nauman; Ali, Rajjab; Warsi, Muhammad Farooq

doi:10.1016/j.ceramint.2017.10.126

Cited by 18 publications

(3 citation statements)

References 42 publications

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“…2 Also, the small particle sizes have aided an understanding of many physical phenomena and processes that occur in complex iron oxides. 3 Along with traditional applications, such as in microwave devices, 4 transformer cores, 5 solid-state gas sensors, 6 high-frequency magnets, 7 high-temperature catalysts, 8 and targeted drug delivery, 9,10 superparamagnetic nanoparticles of ferrite spinels are also promising for use as liquid fillers in heat transfer fluids, 11 in magnetoviscous 12 and magnetorheological fluids, 13 for storing high-density information, 14,15 and in devices with advanced intelligent technologies. 16 It should be noted that the low saturation magnetization values of nanometer particles limit their practical use.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of doped ferrites and exploration of their structure and magnetic behavior

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Fabrication of doped ferrites and exploration of their structure and magnetic behavior

et al. 2023

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“…Among many wet chemical methods Micro-emulsion method is not only simple and economical, but it also gives control and uniformity over particle size. Resulting nanocrystals greatly help in the study of properties of spinel ferrites (Gilani & Shifa, 2018).…”

Section: Introductionmentioning

confidence: 99%

Tuning the Properties of Praseodymium Cobalt-Zinc Ferrites by Substitution of Bismuth

et al. 2022

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This work carried out the study of Co0.5Zn0.5Bi0.4-xPr0.1Fe1.5+xO4 spinel ferrite series (x = 0,0.1, 0.2, 0.3 and 0.4) prepared via micro-emulsion route. Effects on structural, electrical, optical and morphology properties is studied by varying Bi concentration (x = 0,0.1, 0.2, 0.3 and 0.4). The characterization techniques employed included X-ray diffraction (XRD), scanning electron microscope (SEM), UV-visible spectroscopy and Fourier transform infrared spectroscopy (FTIR). XRD results confirmed the spinel structure having lattice parameter around 8.39 Å and particle size decreased from 30 nm to 41 nm with increasing Bi concentration. Fourier transform infrared spectroscopy (FTIR) revealed fingerprints of metal oxides band at 408-577 cm-1. Optical properties were studied UV-visible spectroscopy and Eg was found to vary from 2.83 eV to 2.59 eV. The scanning electron microscope (SEM) described the morphology of the samples. We then examine the results and the material's characteristics, as well as the areas in which it can be used.

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“…Lithium ferrites, partially doped by manganese, are one of the most used compositions in commercial microwave materials [8]. To achieve high densities in lithium-rich ferrites, inclusion of rare-earth (RE) ions into the spinel lattice plays a key role [9][10][11]. From the point of view of high-frequency applications, the knowledge of ferromagnetic resonance and electrical properties is enormously important.…”

Section: Introductionmentioning

confidence: 99%

Correlation between ferromagnetic resonance and densification of RE substituted polycrystalline ferrites

Manzoor

Khan

Kuch

2018

Ceramics International

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We report the dopant-and size-dependent variations in high-frequency magnetic and electrical transport properties of Ho-substituted Li-Mn polycrystalline ferrites. Thermal stability and phase identification were confirmed by thermal gravimetric analysis and X-ray diffraction experiments. The overall average crystallite size decreased from 29.6 to 17.5 nm, whereas the bulk density increased from 3.47 to 4.29 g/cm 3 with increasing Ho content. Ferromagnetic resonance (FMR) measurements at the X-band revealed significant shifts in FMR linewidths and resonance positions as a function of composition. Both, FMR linewidth and porosity, were found to decrease with the systematic addition of Ho from 2538 to 2359 Oe and from 26 to 15.4%, respectively. The substitution of Ho 3+ for Fe 3+ reduced the net magnetization of the spinel lattice from 53 to 41 emu/g. Electrical measurements revealed that the resistivity is higher in samples with smaller grains possessing a greater number of thin insulating grain boundaries. The activation energy ∆E required for hopping increases from 0.09 to 0.16 eV with Ho addition, which may be well explained by the increase in resistivity. The substitution of Ho 3+ for Fe 3+ causes a decrease in Curie temperature T c due to the damping of A-B exchange interactions.

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New LiCo0.5PrxFe2−xO4 nanoferrites: Prepared via low cost technique for high density storage application

Cited by 18 publications

References 42 publications

Fabrication of doped ferrites and exploration of their structure and magnetic behavior

Fabrication of doped ferrites and exploration of their structure and magnetic behavior

Tuning the Properties of Praseodymium Cobalt-Zinc Ferrites by Substitution of Bismuth

Correlation between ferromagnetic resonance and densification of RE substituted polycrystalline ferrites

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