Synthesis and physical characterization of gamma irradiated cadmium phosphate glass modified by copper oxide

Sallam, O.I.; Abdeldaym, A.; Ezz-Eldin, F.M.

doi:10.1016/j.matchemphys.2020.123241

Cited by 28 publications

(3 citation statements)

References 32 publications

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“…Also, the direct optical band gap energy decreased from 4.11 eV for pristine Er/Yb lead phosphate glass to 3.42 eV at 50 kGy. The (2h ∕E g ) 5 .…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the shift of the peaks, which matched with a decrease in intensity at 764 cm −1 upon irradiation with different gamma doses, may be due to a change in bond angles besides the change in the bond length of the P-O-P bridges which means the glass network stability against radiation [64,[71][72][73]. Also, decreasing the intensity of the peaks in the area of 600-650 cm −1 and 900-1200 cm −1 may be attributed to the rearrangement of defects and NBO originated by irradiation that resulted in conversion from PO 4 (tetrahedral groups) to PO 3 units [5].…”

Section: Fourier Transform Infra-red (Ftir) Studiesmentioning

confidence: 99%

“…The scientific community has recently focused on manufacturing and analyzing optical glass systems doped with heavy metal oxide (HMO) and its special applications in optics, photonic devices, and nuclear engineering [1][2][3][4][5]. Synthesis and characterization of new materials are important for several applications [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced linear and nonlinear optical properties of erbium/ytterbium lead phosphate glass by gamma irradiation for optoelectronics applications

et al. 2022

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Herein, this study intends to reveal the impact of gamma irradiation on the structural, linear, and nonlinear optical characteristics of 47P2O5−23Na2O−6Al2O3−22PbO−0.5Er2O3−1.5Yb2O3 glass. The Er/Yb-doped lead phosphate glass samples were produced using the traditional melt quenching procedure and then treated to different doses of gamma irradiation (0, 20, 50, and 100) kGy. The amorphous phase structure of the Er/Yb-doped lead phosphate glass samples was verified through XRD patterns. Also, the shift of the FTIR peaks due to the change in bond angles, and the change in the bond length of the P–O–P bridges means the glass network stability against radiation. With increasing irradiation dosages, the energy gap dropped from 4.11 eV to 3.42 eV and then enhanced to 3.48 at 100 kGy. At the same time, the Urbach energy enhanced from 10.23 eV to 37.03 eV. The oscillator energy Eo was found between 1.55 and 1.62 eV. Also, the dispersion energy Ed varied between 2.11 eV at 100 kGy and 2.71 eV at the dose of 50 kGy. The percentage of free carrier ions to effective mass (N/m*) is in the range (4.82–8.66) × 1047 cm3/g. Besides, the lattice dielectric constant ($${\varepsilon }_{l}$$ ε l ) increased from 5.54 to 6.63 as the gamma dosages increased. Furthermore, increasing gamma doses up to 50 kGy promotes susceptibility, which subsequently declines at 100 kGy, suggesting that increasing gamma doses over 50 kGy weakens polarizability potential. While the increasing gamma doses up to 50 kGy reduces the nonlinear refractive index and then improves at 100 kGy. Overall, the nonlinear and linear research revealed that Er/Yb lead phosphate glass is being used as a promising material for gain media and optical amplifiers.

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“…Also, the direct optical band gap energy decreased from 4.11 eV for pristine Er/Yb lead phosphate glass to 3.42 eV at 50 kGy. The (2h ∕E g ) 5 .…”

Section: Discussionmentioning

confidence: 99%