Ab-initio study of structural, morphological and optical properties of multiferroic La2FeCrO6

Ateia, Ebtesam E.; Gawad, D.; Arman, M.M.

doi:10.1016/j.jallcom.2023.173017

Cited by 7 publications

(2 citation statements)

References 59 publications

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“…The figure indicates that the NPs are somewhat aggregated due to magnetic particle interaction. The particle sizes obtained align somewhat with the XRD data [45].…”

Section: Resultssupporting

confidence: 84%

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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“…The figure indicates that the NPs are somewhat aggregated due to magnetic particle interaction. The particle sizes obtained align somewhat with the XRD data [45].…”

Section: Resultssupporting

confidence: 84%

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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“…These additional modes may be assigned to non-zero wave-vector phonons that are forbidden by Raman selection rules. According to the proposed theory, some defects like Cu vacancies, and interstitial oxygen relax the selection rules [39]. A broad peak at ≅ 470 cm -1 is detected, which may be due to the relaxation of the selection rules caused by the Cu vacancies, and/ OR interstitial oxygen atoms [40].…”

Section: Raman Spectroscopy Analysis (Rsa)mentioning

confidence: 95%

Comparative study of the structural, magnetic and electrical properties of cuprous delafossites CuBO₂(B = Zn, Mn and Er) prepared using the flash auto-combustion technique

Ateia,

Soliman,

Morsy

2024

Phys. Scr.

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The flash auto-combustion method was utilized to produce Cu-based delafossites of CuBO2 (B = Zn, Mn, and Er). X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS) were employed to verify the phase formation, surface morphology, and oxidation states of the synthesized delafossite samples. The crystallite sizes were determined to be 43, 16.76, and 21.66 nm for CuZnO2, CuMnO2, and CuErO2 nanoparticles (NPs), respectively. The magnetic characteristics of CuZnO2, CuMnO2, and CuErO2 samples were studied at room temperature, revealing their paramagnetic nature through the hysteresis effect. The Seebeck coefficient (S) for CuZnO2 was found to be positive, while it was negative for CuMnO2 and CuErO2. The thermoelectric power of CuZnO2 NPs was high, indicating their potential as materials for more efficient thermoelectric devices. Additionally, CuZnO2 exhibited an antimicrobial response against four-gram (+ve) bacteria, four-gram (-ve) bacteria, and the fungus Candida albicans (CA). The data obtained demonstrated that CuZnO2 NPs altered bacterial cell morphology, ultimately leading to bacterial cell death.

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New insights into optical properties, and applications of Zr-doped BaTiO3

Reda,

Ateia,

El-Dek

et al. 2024

Appl. Phys. A

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The present work scrutinizes a few uses of barium titanate BaTi1–xZrxO3 (0.0 ≤ x ≤ 0.3) nanoparticles, which are an innovative and highly promising material for a variety of applications, including optical applications; and waste water treatment. To estimate the quality of a synthesized powder relative to an already existing commercial powder, the samples were prepared using cheaper raw materials and simpler, faster procedures than those reported in other literature at lower annealing durations and temperatures. The prepared samples were characterized by field emission scanning electron microscopy (FESEM), and Raman spectroscopy, which confirmed the coarse nature of the samples and the system's tetragonality. Furthermore, UV–visible absorbance of all compositions was studied. It has been determined that optical transition is directly allowed after extensive research, and the optical band gap (Eg) values increase with increasing (Zr4+) ion concentration. The derivation of absorption spectrum fitting (DASF) technique was used to support the type of transition and calculate the value of the coefficient of electronic transition (n). Samples can perform overall water splitting and CO2 reduction processes. The Langmuir and Freundlich isotherms were used to comprehend the procedure of adsorption on the investigated samples. The BaTi0.8Zr0.2O3 has been used to successfully remove 99.9% of heavy metals (Cr6+) from wastewater. The obtained results provide new insights into the control of the structure, and optical behaviors in BaTi1–xZrxO3.

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Ab-initio study of structural, morphological and optical properties of multiferroic La2FeCrO6

Cited by 7 publications

References 59 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

Comparative study of the structural, magnetic and electrical properties of cuprous delafossites CuBO₂(B = Zn, Mn and Er) prepared using the flash auto-combustion technique

New insights into optical properties, and applications of Zr-doped BaTiO3

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Ab-initio study of structural, morphological and optical properties of multiferroic La2FeCrO6

Cited by 7 publications

References 59 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

Comparative study of the structural, magnetic and electrical properties of cuprous delafossites CuBO2(B = Zn, Mn and Er) prepared using the flash auto-combustion technique

New insights into optical properties, and applications of Zr-doped BaTiO3

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Comparative study of the structural, magnetic and electrical properties of cuprous delafossites CuBO₂(B = Zn, Mn and Er) prepared using the flash auto-combustion technique