Influence of La3+ ions on the structural, optical and dielectric properties and ligand field parameters of Fe3+ hybrid borate glasses

Abul-Magd, Ashraf A.; Abu-Khadra, Ahmad S.; Taha, Ashraf M.; Basry, A.A.H.

doi:10.1016/j.jnoncrysol.2022.121981

Cited by 17 publications

(7 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The characteristic bands of B–O–B bending vibrations in BO 3 triangles, which centered at 690 cm −1 decomposed to 643 cm −1 and 684 & 733 cm −1 . The band at 643 cm −1 refers to the asymmetric bond bending vibrations of BO 3 , while that are 684 and 733 cm −1 refers to symmetric bond bending vibrations 28 – 33 . Co ions inclusion (ErCoCu2 glass) increased the intensity and relative area of this band, while an opposite trend was observed with Cu ions inclusion (ErCoCu3).…”

Section: Resultsmentioning

confidence: 99%

“…The deconvolution of BO 4 unit broadband, which appeared here in the spectral region 770–1120 cm −1 emerged six absorption bands at 839, 919, 984, 1018, 1053, and 1091 cm −1 . The located band at 839 cm −1 attributed to the B–O stretching vibration of NBOs in BO 4 units ( ) 28 , 29 , 34 , 35 . This band also may have arisen as a result of the Pb–O bond vibration of PbO n pyramidal units 36 .…”

Section: Resultsmentioning

confidence: 99%

“…1 3 , 9 , 23 , 24 then density-based parameters (molar volume , mean boron-boron separation , oxygen packing density , and packing density ) were deduced using the Eqs. 2 3 , 9 , 25 – 27 , 3 12 , 28 , 4 12 , 26 , and 5 26 . where & , , , , , , , and are weight of the sample in air & liquid, the liquid density, the molar mass of the glass sample, the Avogadro’s number, the volume containing 1 mol of boron ions inside the studied glass network, the oxygen atoms number per formula unit, the mole fraction, and the packing factor…”

Section: Experimental and Theoretical Aspectsmentioning

confidence: 99%

“…The steepness coefficient S , which measures the width of the band-tail in the main gap, was calculated using the formula 28 , 29 . where , , and are the exponential constant, Boltzmann constant, and room temperature.…”

Section: Experimental and Theoretical Aspectsmentioning

confidence: 99%

“…16, is used to determine the conducting behavior of the solid precisely. According to Herzfeld's theory of metallization of the condensed matter, the M value may be approached to zero, close to one, or stands between them, which reflects the conductive, insulating, or semiconducting nature of the solid respectively 28 , 29 . …”

Section: Experimental and Theoretical Aspectsmentioning

confidence: 99%

See 4 more Smart Citations

The effect of cobalt/copper ions on the structural, thermal, optical, and emission properties of erbium zinc lead borate glasses

Taha

Saeed

2023

Sci Rep

View full text Add to dashboard Cite

A host glass network of 70B2O3–10Pb3O4–18ZnO–2Er2O3 (ErCoCu1) was proposed and the impact of 1 mol% of Co or/and Cu ions on its structural, thermal, optical, and green emission properties was studied extensively. The X-ray diffraction spectra confirmed the amorphous structure of the produced glasses. Density and density-based parameters behavior showed that the Co or/and Cu ions fill the interstitial positions of the proposed ErCoCu1 network, causing its compactness. Both ATR-FTIR and Raman Spectra affirmed the formation of the fundamental structural units of the borate network, B–O–B linkage, BO3, and BO4. Additionally, the penetration of Co or/and Cu ions inside the ErCoCu1 converts the tetrahedral BO4 units to triangle BO3 causing its richness by non-bridging oxygens. The addition of Co or/and Cu reduces the glass transition temperature as a result of the conversion of the BO4 to BO3 units. Optical absorption spectra for the host glass ErCoCu1 showed many of the distinguished absorption bands of the Er3+ ion. Penetration of Co ion generates two broadbands referring to the presence of Co2+ ions in both tetrahedral and octahedral coordination and Co3+ ions in the tetrahedral coordination. In the Cu-doped glasses, the characteristic absorption bands of Cu2+ and Cu+ were observed. A green emission was generated from the ErCoCu1 glass under 380 nm excitation wavelength. Moreover, no significant effect of Co or/and Cu on the emission spectra was recorded. The considered glasses had appropriate properties qualifying them for optoelectronics and nonlinear optics applications.

show abstract

Section: Resultsmentioning

confidence: 99%