The effect of fluence on the magnetic properties of superparamagnetic iron-nickel nanoparticles in SiO2 made by dual Ni and Fe low energy ion implantation

Williams, G. V. M.; Prakash, T. L.; Kennedy, J.

doi:10.1016/j.nimb.2017.04.007

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…For instance, Ni has a larger atomic radius than Fe, and the addition of Ni may cause lattice distortion in the composite. This can affect the magnetic interactions between the Fe ions and lead to a decrease in the remanence magnetization [72,73].…”

Section: Magnetic Measurementsmentioning

confidence: 99%

The impact of Cu, Ni and Fe₂O₃ on the magnetic behavior and structural properties of FeSiO₂ nanocomposite synthesized through ball milling

Younes,

Amraoui,

Manseri

et al. 2023

Phys. Scr.

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The nanocomposite Fe-A/SiO2 soft magnetic materials, with Cu, Ni, and Fe2O3 as dopants, were produced using a mechanical alloying technique. Our central objective was to explore the impact of process parameters on Fe/SiO2 nanocomposite properties. We assessed varying milling time and dopant addition rates, analyzing structural, morphological, and magnetic aspects through SEM, EDS, XRD, and VSM at different synthesis stages. The XRD pattern revealed iron, Fe(Ni), Fe(Cu), and Fe2O3 with an average crystallite size of 28–39 nm and lattice strain of 0.0097%–0.0222%. Notably, the lattice parameters decreased from 0.2852 to 0.2836 nm. Among nanocomposites, FeCu/SiO2 displayed the smallest crystallite size (34.3 nm), while FeNiSiO2 showed the highest lattice parameter (0.2853 nm). The ATR analysis unveiled Si–O–Si stretching vibrations at 1052 cm−1, intensifying with milling time. The inclusion of Cu and Ni in the FeSiO2 system significantly influenced the Si–O–Si bond. Coercivity and remanence magnetization in Fe/SiO2 increased notably with milling time, reaching 68.47 Oe and 8.73 emu g−1, respectively. The Fe/Fe2O3/SiO2 and FeSiO2 nanocomposites exhibited the maximum values of coercivity (47.07 Oe) and remanence magnetization (12.24 emu g−1). Remarkably, the Fe/SiO2 nanocomposite displayed the highest saturation magnetization, measuring an impressive 176.07 emu g−1 after 30 h of milling, while FeCu/SiO2 reached 165.64 emu g−1 after 20 h. Overall, our findings suggest the Fe/SiO2 nanocomposite as a promising high-frequency soft magnetic material.

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Section: Magnetic Measurementsmentioning

confidence: 99%

The impact of Cu, Ni and Fe₂O₃ on the magnetic behavior and structural properties of FeSiO₂ nanocomposite synthesized through ball milling

Younes,

Amraoui,

Manseri

et al. 2023

Phys. Scr.

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Structural and magnetic properties of near surface superparamagnetic Ni1-Fe nanoparticles in SiO2 formed by low energy dual ion implantation with different fluences

Williams

Kennedy

Murmu

et al. 2018

Applied Surface Science

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Structure and magnetic properties of Fe nanoparticles in amorphous silica implanted with Fe ions and effect of subsequent energetic heavy ion irradiation

Iwase

Fukuda

Saitoh

et al. 2022

Journal of Applied Physics

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Amorphous silicon dioxide (hereafter SiO2) samples were implanted with 380 keV Fe ions at room temperature. After the implantation, some samples were irradiated with 16 MeV Au ions. The magnetic property was investigated by using a SQUID magnetometer, and the morphology of Fe-implanted SiO2 samples was examined by using a transmission electron microscope and x-ray absorption spectroscopy (extended x-ray absorption fine structure and x-ray absorption near edge structure). The size of Fe nanoparticles increases with an increase in the amount of Fe implantation. A part of Fe nanoparticles consists of Fe oxides, and with an increase in the amount of Fe implantation, the valence state of Fe atoms and the structure of Fe nanoparticles gets close to those of metallic α-Fe. The room temperature magnetism was observed in Fe-implanted SiO2 samples. The magnetization–magnetic field curves for samples implanted with a small amount of Fe are reproduced by the Langevin equation, implying that Fe nanoparticles present the superparamagnetic behavior. For a large amount of Fe implantation, the magnetization–magnetic field curve shows the ferromagnetic state. Such a result of magnetic property is consistent with the results of the x-ray absorption. By the subsequent 16 MeV Au irradiation, the Fe nanoparticles were fragmentated, resulting in the decrease in magnetization. The optical absorption property of the SiO2 samples is briefly discussed.

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The effect of fluence on the magnetic properties of superparamagnetic iron-nickel nanoparticles in SiO2 made by dual Ni and Fe low energy ion implantation

Cited by 3 publications

References 25 publications

The impact of Cu, Ni and Fe₂O₃ on the magnetic behavior and structural properties of FeSiO₂ nanocomposite synthesized through ball milling

The impact of Cu, Ni and Fe₂O₃ on the magnetic behavior and structural properties of FeSiO₂ nanocomposite synthesized through ball milling

Structural and magnetic properties of near surface superparamagnetic Ni1-Fe nanoparticles in SiO2 formed by low energy dual ion implantation with different fluences

Structure and magnetic properties of Fe nanoparticles in amorphous silica implanted with Fe ions and effect of subsequent energetic heavy ion irradiation

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The effect of fluence on the magnetic properties of superparamagnetic iron-nickel nanoparticles in SiO2 made by dual Ni and Fe low energy ion implantation

Cited by 3 publications

References 25 publications

The impact of Cu, Ni and Fe2O3 on the magnetic behavior and structural properties of FeSiO2 nanocomposite synthesized through ball milling

The impact of Cu, Ni and Fe2O3 on the magnetic behavior and structural properties of FeSiO2 nanocomposite synthesized through ball milling

Structural and magnetic properties of near surface superparamagnetic Ni1-Fe nanoparticles in SiO2 formed by low energy dual ion implantation with different fluences

Structure and magnetic properties of Fe nanoparticles in amorphous silica implanted with Fe ions and effect of subsequent energetic heavy ion irradiation

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Product

Resources

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The impact of Cu, Ni and Fe₂O₃ on the magnetic behavior and structural properties of FeSiO₂ nanocomposite synthesized through ball milling

The impact of Cu, Ni and Fe₂O₃ on the magnetic behavior and structural properties of FeSiO₂ nanocomposite synthesized through ball milling