Multiferroic properties of GdFe0.9M0.1O3 (M = Ag1+, Co2+ and Cr3+) nanoparticles and evaluation of their antibacterial activity

Ateia, Ebtesam E.; Hussein, B.; Singh, Charanjeet; Arman, M. M.

doi:10.1140/epjp/s13360-022-02662-2

Cited by 11 publications

(4 citation statements)

References 70 publications

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“…On the contrary, the increase in θ 3 and θ 4 due to the same effects suggests a strengthening of B-B interactions. This change can be attributed to cationic rearrangement, as discussed previously [66]. The bond angle is influenced by both Zr 4+ content and irradiation, as shown in table 4.…”

supporting

confidence: 52%

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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supporting

confidence: 52%

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 results were collected in the 2-theta range 20° ≤ 2θ ≤ 70° with a step size =0.02° with an irradiation time of 0.5 s/ step. Additionally, the particle size was calculated using Scherrer equation [ 24 ]. Fourier transform infrared (FTIR) studies were performed in order to assure the phase purity and the nature of chemical bonds formed in CFN using FTIR (Thermo Fisher Scientific Inc., Pittsburgh, PA, USA).…”

Section: Methodsmentioning

confidence: 99%

Mechanistic Approach on the Pulmonary Oxido-Inflammatory Stress Induced by Cobalt Ferrite Nanoparticles in Rats

Hassanen

Abdelrahman

Aboul-Ella

et al. 2023

Biol Trace Elem Res

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Cobalt ferrite nanoparticles (CFN) are employed in data storage, imaging, medication administration, and catalysis due to their superparamagnetic characteristics. The widespread use of CFN led to significantly increased exposure to people and the environment to these nanoparticles. Until now, there is not any published paper describing the adverse effect of repeated oral intake of this nanoformulation on rats’ lungs. So, the current research aims to elucidate the pulmonary toxicity prompted by different concentrations of CFN in rats as well as to explore the mechanistic way of such toxicity. We used 28 rats that were divided equally into 4 groups. The control group received normal saline, and the experimental groups received CFN at dosage levels 0.05, 0.5, and 5 mg/kg bwt. Our findings revealed that CFN enhanced dose-dependent oxidative stress manifested by raising in the MDA levels and declining in the GSH content. The histopathological examination revealed interstitial pulmonary inflammation along with bronchial and alveolar damage in both 0.5 and 5 mg CFN given groups. All these lesions were confirmed by the immunohistochemical staining that demonstrated strong iNOS and Cox-2 protein expression. There was also a significant upregulation of TNFα, Cox-2, and IL-1β genes with downregulation of IL-10 and TGF-β genes. Additionally, the group receiving 0.05 mg CFN did not exhibit any considerable toxicity in all measurable parameters. We concluded that the daily oral intake of either 0.5 or 5 mg CFN, but not 0.05 mg, could induce pulmonary toxicity via NPs and/or its leached components (cobalt and iron)-mediated oxido-inflammatory stress. Our findings may help to clarify the mechanisms of pulmonary toxicity generated by these nanoparticles through outlining the standards for risk assessment in rats as a human model.

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“…The samples' quality is detected by evaluating the dislocation density (δ). The dislocation (the length of dislocated lines per unit volume of the crystal lattice) is calculated using the following equation [41]:…”

Section: Xrd Analysismentioning

confidence: 99%

Tuning the Structural and Magnetic Properties of the Stuffed Framework Structures MeFe2O4 (Me = Ni, Ca, and Sr)

Ateia

Hussien

Mohamed

2022

J Inorg Organomet Polym

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Spinel ferrite nanoparticles (NPs), have received a lot of attention in medical applications. Therefore, facile synthesis of ferrite NPs of numerous shapes and sizes using the citrate autocombustion technique was utilized in this article. A series of ferrite with the general formula MeFe2O4 [Me = nickle (Ni), calcium (Ca), and strontium (Sr)] are synthesized with varying average ionic radii and cation disorder on the A-site. The structural and morphological characterization of the prepared samples was performed using XRD, HRTEM, FESEM, EDAX, XPS, and Raman analyses. The phase transformation from cubic (Ni) to orthorhombic (Ca) to monoclinic (Sr) was also revealed by XRD. Accordingly, HRTEM images demonstrated nanoparticles in orthorhombic and monoclinic shapes, which are inconsistent with XRD analyses. The coercive field HC for monoclinic SrFe2O4 is ≈ 42 times larger than the Hc for NiFe2O4 with a cubic structure. This deviation in HC compared to the cubic shape particles can be coupled to the shape anisotropy present in SrFe2O4 and refers to the presence of a preferred magnetization direction within the material. The use of monoclinic SrFe2O4 NPs as antifungal activity agents is noteworthy due to their advantages in terms of surface area, efficacy, and biodegradability.

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Multiferroic properties of GdFe0.9M0.1O3 (M = Ag1+, Co2+ and Cr3+) nanoparticles and evaluation of their antibacterial activity

Cited by 11 publications

References 70 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

Mechanistic Approach on the Pulmonary Oxido-Inflammatory Stress Induced by Cobalt Ferrite Nanoparticles in Rats

Tuning the Structural and Magnetic Properties of the Stuffed Framework Structures MeFe2O4 (Me = Ni, Ca, and Sr)

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