Nd:YAG laser irradiation effect on the physical properties of cobalt ferrite nanoparticles

Ateia, Ebtesam E.; Ghaffar, Dalia. N.; Badr, Y.; Fangary, Nahla

doi:10.1007/s00339-019-2983-0

Cited by 8 publications

(3 citation statements)

References 21 publications

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“…As previously mentioned, the values of the ionic radii of A and B sites (r A and r B ) are used to calculate the theoretical lattice parameter (a th ) [6,37]. The a th values for all non-irradiated and post-irradiated samples are consistent with those calculated by Lawrence Kumar et al [18], who proposed that nonmagnetic Zr 4+ prefers to occupy the cubic spinel lattice's A sites.…”

Section: Resultssupporting

confidence: 69%

“…CoFe 2 O 4 nanoparticles (NPs) possess important characteristics such as high coercivity (Hc), moderate saturation magnetization (Ms), low eddy current, and a large magnetostrictive coefficient [5][6][7][8][9]. These properties, along with their chemical and physical stability, enable CoFe 2 O 4 NPs to be employed in many different applications.…”

Section: Introductionmentioning

confidence: 99%

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Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Ateia,

Fangary,

Ghafar

2024

Phys. Scr.

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The impact of Nd:YAG laser irradiation and the addition of zirconium ions (Zr4+) on the physical properties of CoFe2O4 spinel nano-ferrites has been studied. The co-precipitation method was used to synthesize the samples. X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) were employed to examine the structure and morphology. The decrease in the Curie temperature Tc is due to the laser irradiation and the increase in the Zr content of the sample. This decline in Tc is a result of an increase in the canting of the spins, leading to a change in the thermal energy needed for compensate the spin alignment. The difference in the Tc between the non irradiated and the irradiated samples is about 7%, 43% and 34% for CoFe2O4, Co1.1Zr0.1Fe1.8O4, and Co1.3Zr0.3Fe1.4O4, respectively. The decrease in the coercivity of the laser irradiated sample is due to a reduction in the magnetic anisotropy and an altered distribution of the cations (Co2+, Fe3+, Zr4+). The observed trend indicates that laser irradiation, and Zr substitution, can be used to modify the magnetic hardness of the samples. The low coercivity of irradiated Co1.1Zr0.1Fe1.8O4 makes it suitable for a range of applications. The high-frequency response of the Co1+xZrxFe2–2xO4 NPs shows that they can operate within the frequency range of 7.5 GHz–11.56 GHz.

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Section: Resultssupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Ateia,

Fangary,

Ghafar

2024

Phys. Scr.

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“…Thus, cation inversion is responsible for the changes in the properties of ferrites. There are certain methods such as laser irradiation (Tawfik et al, 2002;Ateia et al, 2019), ion implantation (Sharma et al, 2023a), gamma-irradiation (Raut et al, 2018) and heavy ion irradiation (Nongjai et al, 2023) which are well known to change the physical behavior of ferrites in a controlled way. This review focuses on the cation inversion manipulation and associated changes with swift heavy ion irradiation.…”

Section: +mentioning

confidence: 99%

Physical Property Variation of Ferrite Nanoparticles under Heavy Ion Irradiation

Dhyani,

Joshi,

Sahoo

et al. 2024

Prabha Materials Science Letters

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The size-dependent behavior of nanostructured ferrite is well established. Various physical properties such as magnetic, optical and electrical exhibit strong size dependence. Thus, any treatment which causes a change in size is able to modify the characteristics of ferrites. The result of this effect can be seen when these ferrites are subjected to an intense heavy ion beam which modifies the physical properties of ferrites. This modification is related to cation redistribution owing to size change in most of the cases under heavy ion irradiation. However, few recent studies show that cation redistribution may occur under ion irradiation even though no size change is observed. The objective of this review is to highlight this effect in ferrite systems which ultimately may provide ample opportunity for its potential applications.

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Polybenzoxazine/Mg–Zn nano-ferrite composites: preparation, identification, and magnetic properties

et al. 2021

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Nd:YAG laser irradiation effect on the physical properties of cobalt ferrite nanoparticles

Cited by 8 publications

References 21 publications

Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Physical Property Variation of Ferrite Nanoparticles under Heavy Ion Irradiation

Polybenzoxazine/Mg–Zn nano-ferrite composites: preparation, identification, and magnetic properties

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