The influence of fluorine and nickel ions on the structural, spectroscopic, and optical properties of (100 − x)[15NaF–5CaF2–80B2O3]-xNiO glasses

Hammad, Ahmed H.; Abdelghany, A.M.; Okasha, Aly; Marzouk, Samir Y.

doi:10.1007/s10854-017-6590-6

Cited by 25 publications

(5 citation statements)

References 31 publications

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“…By doping the Glass with Fe 2 O 3 content, two visible absorption bands around 360 and 670 nm can be detected. These bands are related to the octahedral states of Fe 2+ ions [18,23]. The strong band at about 360 nm (3.44 eV) is Laporte-forbidden and spin-forbidden, while the broadband at about 670 nm (1.86 eV) is attributed not only to the transition from Fe 2+ to Fe 3+ ions but also to the 3d-3d tra-transition of Fe 3+ ions.…”

Section: Physical Parametersmentioning

confidence: 95%

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Characterization of optical and radiation shielding behaviors of ferric oxide reinforced bismuth borate glass

et al. 2021

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This study aimed to investigate the ferric oxide effect on optical and radiation shielding behaviors of bismuth borate glasses. Gamma-ray attenuation competencies of six glass samples along with optical properties were investigated in terms of their utilization suitability as a shield or personal protection equipment in industrial and medical fields. The chemical composition (60-x) B2O3 + 20Bi2O3 + 20Li2O+xFe2O3 with different Fe2O3 concentrations were prepared using the melt-quenching technique. Gamma-ray attenuation competencies of six glass samples along with optical properties were investigated in terms of their utilization suitability in industrial and medical fields. The outcomes of optical investigations indicated that direct optical band gap (Eg direct) decrease from 5.11 eV to 4.82 eV, while for indirect transition (Eg indirect) decrease from 4.62 eV to 3.79 eV, with increasing Fe2O3 concentrations. To determine the radiation shielding performance, mass attenuation coefficients (μ m) of samples were calculated using FLUKA code and XCOM program between 0.015–15 MeV photon energy range. Accordingly, gamma shielding parameters such as mass (MAC) and linear (LAC) attenuation coefficients, half-value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective atomic numbers (Zeff), electron density (Nel), and fast neutron removal cross sections (ΣR) were evaluated for all glass samples. The results showed that increasing Fe2O3 concentration in glass structure increased the MAC and Zeff. The Fe-10 was reported with the lowest HVL values in addition to the highest MAC and Zeff values.

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Section: Physical Parametersmentioning

confidence: 95%

“…It can be confirmed that the high UV peak at around 210 nm shown in figure 4 can be attributed to the presence of iron throughout the starting materials. [18][19][20][21][22]. By doping the Glass with Fe 2 O 3 content, two visible absorption bands around 360 and 670 nm can be detected.…”

Section: Physical Parametersmentioning

confidence: 99%

Characterization of optical and radiation shielding behaviors of ferric oxide reinforced bismuth borate glass

et al. 2021

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“…We can see that a peak in the curve appeared at the band gap energy (E g ); i.e., hν = E g . The peak at a particular energy value gives the approximate optical band gap, E g [37]. energy (Eg); i.e., hν = Eg.…”

Section: Optical Band Gapmentioning

confidence: 99%

“…energy (Eg); i.e., hν = Eg. The peak at a particular energy value gives the approximate optical band gap, Eg [37]. On other hand, the type of the optical transition can be estimated from the slope (m) of the curve of ln (αhν) vs. ln (hν − Eg) using the Eg value of the highest Fe concentration doped ZO (15 at.…”

Section: Optical Band Gapmentioning

confidence: 99%

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Structural, Optical, Magnetic and Electrical Properties of Sputtered ZnO and ZnO:Fe Thin Films: The Role of Deposition Power

Faramawy

Elsayed

Scian³

et al. 2022

Ceramics

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Structural, optical, magnetic, and electrical properties of zinc oxide (henceforth, ZO) and iron doped zinc oxide (henceforth, ZOFe) films deposited by sputtering technique are described by means of Rutherford backscattering spectrometry, grazing incidence X-ray diffraction, scanning electron microscope (SEM), UV–Vis spectrometer, vibrating sample magnetometer, and room temperature electrical conductivity, respectively. GIXRD analysis revealed that the films were polycrystalline with a hexagonal phase, and all films had a preferred (002) c-axis orientation. The lattice parameters a and c of the wurtzite structure were calculated for all films. The a parameter remains almost the same (around 3 Å), while c parameter varies slightly with increasing Fe content from 5.18 to 5.31 Å throughout the co-deposition process. The optical gap for undoped and doped ZO was obtained from different numerical methods based on the experimental data and it was increased with the increment of the concentration of Fe dopant from 3.26 eV to 3.35 eV. The highest magnetization (4.26 × 10−4 emu/g) and lowest resistivity (4.6 × 107 Ω·cm) values of the ZO films were found to be at an Fe content of 5% at. %. An explanation for the dependence of the optical, magnetic, and electrical properties of the samples on the Fe concentrations is also given. The enhanced magnetic properties such as saturated magnetization and coercivity with optical properties reveal that Fe doped ZO thin films are suitable for magneto-optoelectronic (optoelectronic and spintronics) device applications.

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Structural and optical properties of mixed alkaline earth fluoroborate xBaF2–(50–x)CaF2–50B2O3 glass system

2022

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The influence of fluorine and nickel ions on the structural, spectroscopic, and optical properties of (100 − x)[15NaF–5CaF2–80B2O3]-xNiO glasses

Cited by 25 publications

References 31 publications

Characterization of optical and radiation shielding behaviors of ferric oxide reinforced bismuth borate glass

Characterization of optical and radiation shielding behaviors of ferric oxide reinforced bismuth borate glass

Structural, Optical, Magnetic and Electrical Properties of Sputtered ZnO and ZnO:Fe Thin Films: The Role of Deposition Power

Structural and optical properties of mixed alkaline earth fluoroborate xBaF2–(50–x)CaF2–50B2O3 glass system

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