Magnetic characterization of Co1−xNixFe2O4 (0⩽x⩽1) nanoparticles prepared by co-precipitation route

Maaz, K.; Khalid, Waqas; Mumtaz, Arif; Hasanain, S. K.; Liu, J.; Duan, Jinglai

doi:10.1016/j.physe.2008.10.009

Cited by 117 publications

(43 citation statements)

References 25 publications

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“…The last trend can be explained by the fact that the ionic radius of Ni 2+ (0.72Å) is lower than that of Co 2+ (0.74Å) [11]. Similar results were obtained in studies [11,12,14]. (Fig.…”

Section: Resultssupporting

confidence: 84%

“…Excess magnetization values of the samples (M r = 7.58-38.45 emu/g) obtained in this study were not different from data published earlier [10][11][12], but coercive force value (H c = 51.94-838.42 Oe) decreased 2-3-fold depending on the value of x. The saturation magnetization (M s = 50.3-80.45 emu/g) was not only higher than the saturation magnetization of CoFe 2 O 4 spinel, but also much higher than the saturation magnetization of NiFe 2 O 4 spinel [3,4,10,17].…”

Section: Resultscontrasting

confidence: 54%

“…NiFe 2 O 4 is a soft magnetic material characterized by small values of coercive force, saturation magnetization and excessive magnetization (H c = 46.46 Oe, M s = 8.8 emu/g, M r = 0.2 emu/g) [1][2][3]. Different magnetic properties of ferrites are required for different applications and can be achieved in several ways: either by controlling the particle size, or by changing the concentrations of hard and soft magnetic phases in the material by introduction of another element (dopant) or by the formation of coatings on SiO 2 [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…In previous studies [1,12], MFe 2 O 4 nanocrystals (M = Co, Ni) were obtained by co-precipitation of M 2+ and Fe 3+ cations at room temperature with the addition of an aqueous ammonia at pH = 11. However, at pH = 11, Co(OH) 2 and Ni(OH) 2 are dissolved with the formation of complexes with ammonia in accordance with the following equation:…”

Section: Introductionmentioning

confidence: 99%

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Phase composition and magnetic properties of Ni1-xCoxFe2O4 nanocrystals with spinel structure, synthesized by Co-precipiation

Tiến¹,

Đạt²,

Миттова³

et al. 2017

Nanosystems: Phys. Chem. Math.

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Nanopowders of nickel ferrite doped with cobalt were synthesized by co-precipitation using a 3 % KOH solution as a precipitant. The effects of different annealing regimes on the composition and particle size of Ni 1−x CoxFe 2 O 4 were studied. It was established that with annealing at t = 1000 • C for 2 h single-phase products were formed with a crystallite size of 30-50 nm. The saturation magnetization and the coercive force increased as the content of the dopant increased from 50.3 emu/g and 51.

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“…The last trend can be explained by the fact that the ionic radius of Ni 2+ (0.72Å) is lower than that of Co 2+ (0.74Å) [11]. Similar results were obtained in studies [11,12,14]. (Fig.…”

Section: Resultssupporting

confidence: 84%

Section: Resultscontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phase composition and magnetic properties of Ni1-xCoxFe2O4 nanocrystals with spinel structure, synthesized by Co-precipiation

Tiến¹,

Đạt²,

Миттова³

et al. 2017

Nanosystems: Phys. Chem. Math.

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“…In a certain Co fraction, the absolute anisotropy will thus reach a minimum, yielding a maximum in magnetic permeability 11 . 7,[12][13][14][15][16] . It is possible to observe a large dispersion of M s values of Ni-Co ferrites with the same composition, but produced by different routes.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, Magnetic, and Microstructural Characterization of Ni0.9Co0.1Fe2O4 Produced by the Ceramic Method

et al. 2018

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Ni-Co ferrites, especially the ones with lower cobalt fractions, are candidate materials for applications in magnetomechanical sensors and electromagnetic wave absorbers. This work studied the microstructure, magnetostriction, flexural strength, and complex magnetic permeability of Ni 0.9 Co 0.1 Fe 2 O 4 , presenting data that weren't covered by previous literature on this composition. It was found that sieving the calcined powder before the forming operation increased the flexural strength of the ceramic. The Ni-Co ferrite had a saturation magnetostriction of 36ppm. The real part of the complex magnetic permeability varied between 2.2-2.3 in frequencies from 100MHz to 1GHz. In frequencies higher than 1GHz, µ' decreased sharply and reached 1 at 3.9GHz. It was found that the grinding media provided a small fraction of Al to the ferrite composition, which apparently affected the complex magnetic permeability of the material but the magnetostriction results were very close to Al-free Ni-Co ferrites with similar composition.

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Phase diagrams of a transverse cubic nanowire with diluted surface shell

et al. 2016

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The effective-field theory with correlations based on the probability distribution technique has been used to investigate the phase diagrams (critical and compensation temperatures) of a transverse antiferromagnetic spin-1/2 Ising cubic nanowire with diluted surface shell. It is found that the phase diagrams of the system are strongly affected by the surface shell parameters. Indeed, two compensation points appear for certain values of Hamiltonian parameters, and the range of appearance of these latter points depends strongly on the surface shell transverse field

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Magnetic characterization of Co1−xNixFe2O4 (0⩽x⩽1) nanoparticles prepared by co-precipitation route

Cited by 117 publications

References 25 publications

Phase composition and magnetic properties of Ni1-xCoxFe2O4 nanocrystals with spinel structure, synthesized by Co-precipiation

Phase composition and magnetic properties of Ni1-xCoxFe2O4 nanocrystals with spinel structure, synthesized by Co-precipiation

Mechanical, Magnetic, and Microstructural Characterization of Ni0.9Co0.1Fe2O4 Produced by the Ceramic Method

Phase diagrams of a transverse cubic nanowire with diluted surface shell

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