Structural and magnetic properties of Co0.7Ni0.3Fe2O4 nanoparticles synthesized by sol–gel method

Mahhouti, Z.; Ali, Murtaza; Moussaoui, H. El; Hamedoun, M.; Marssi, M. El; Kenz, A. El; Benyoussef, A.

doi:10.1007/s00339-016-0178-5

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…To date, several synthesis methods of MNPs have been developed [13,14,15,16,17,18] in an effort to improve the magnetic properties by controlling the size, the morphology, and the composition of the obtained nanoparticles. Among these different routes of synthesis, we have found the co-precipitations, solvothermal, hydrothermal and thermal decomposition which are the most effective ones.…”

Section: Introductionmentioning

confidence: 99%

Chemical synthesis and magnetic properties of monodisperse cobalt ferrite nanoparticles

Mahhouti

Moussaoui

Mahfoud

et al. 2019

J Mater Sci: Mater Electron

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In this work, a successful synthesis of magnetic cobalt ferrite (CoFe2O4) nanoparticles is presented. The synthesized CoFe2O4 nanoparticles have a spherical shape and highly monodisperse in the selected solvent. The effect of different reaction conditions such as temperature, reaction time and varying capping agents on the phase and morphology is studied.Scanning transmission electron microscopy showed that the size of these nanoparticles can be controlled by varying reaction conditions. Both X-ray diffraction and energy dispersive X-ray spectroscopy corroborate the formation of CoFe2O4 spinel structure with cubic symmetry. Due to optimized reaction parameters, each nanoparticle was shown to be a single magnetic domain with diameter ranges from 6 nm to 16 nm. Finally, the magnetic investigations showed that the obtained nanoparticles are superparamagnetic with a small coercivity value of about 315 Oe and a saturation magnetization of 58 emu/g at room temperature. These results make the cobalt ferrite nanoparticles promising for advanced magnetic nanodevices and biomagnetic applications.

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Section: Introductionmentioning

confidence: 99%

Chemical synthesis and magnetic properties of monodisperse cobalt ferrite nanoparticles

Mahhouti

Moussaoui

Mahfoud

et al. 2019

J Mater Sci: Mater Electron

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“…Nowadays, magnetic nanocomposites play an important role in science and technology [10,11]. It is important in practical applications to find materials that can be used in devices such as force sensors and refrigeration equipment.…”

Section: Introductionmentioning

confidence: 99%

The Study of the Influence of Matrix, Size, Rotation Angle, and Magnetic Field on the Isothermal Entropy, and the Néel Phase Transition Temperature of Fe2O3 Nanocomposite Thin Films by the Monte-Carlo Simulation Method

2021

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In this paper, the study of the influence of the matrix structure (mxm) of thin-film, rotation angle (α), magnetic field (B), and size (D) of Fe2O3 nanoparticle on the magnetic characteristic quantities such as the magnetization oriented z-direction (MzE), z-axis magnetization (Mz), total magnetization (Mtot), and total entropy (Stot) of Fe2O3 nanocomposites by Monte-Carlo (MC) simulation method are studied. The applied MC Metropolis code achieves stability very quickly, so that after 30 Monte Carlo steps (MCs), the change of obtained results is negligible, but for certainty, 84 MCs have been performed. The obtained results show that when the mxm and α increase, the magnetic phase transition appears with a very small increase in temperature Néel (TNtot). When B and D increase, TNtot increases very strongly. The results also show that in Fe2O3 thin films, TNtot is always smaller than with Fe2O3 nano and Fe2O3 bulk. When the nanoparticle size is increased to nearly 12 nm, then TNtot = T = 300 K, and between TNtot and D, there is a linear relationship: TNtot = −440.6 + 83D. This is a very useful result that can be applied in magnetic devices and in biomedical applications.

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Interparticle interaction effects on the magnetocaloric properties of γ-Fe2O3 nanoparticles dispersed in polyvinyl alcohol

et al. 2019

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Structural and magnetic properties of Co0.7Ni0.3Fe2O4 nanoparticles synthesized by sol–gel method

Cited by 4 publications

References 21 publications

Chemical synthesis and magnetic properties of monodisperse cobalt ferrite nanoparticles

Chemical synthesis and magnetic properties of monodisperse cobalt ferrite nanoparticles

The Study of the Influence of Matrix, Size, Rotation Angle, and Magnetic Field on the Isothermal Entropy, and the Néel Phase Transition Temperature of Fe2O3 Nanocomposite Thin Films by the Monte-Carlo Simulation Method

Interparticle interaction effects on the magnetocaloric properties of γ-Fe2O3 nanoparticles dispersed in polyvinyl alcohol

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