Probing Network Depolymerization and NBO Creation in Na2O-Sb2O3 Glasses via Site-Sensitive Eu3+ Photoluminescence

Authors

  • Sayah Rezgui Mohamed Khider University. Biskra
  • Lina Beghdadi
  • Majda Hamzaoui
  • Nesrine Guesmia
  • Mohamed Toufik Soltani
  • Mourad Baazouzi

DOI:

https://doi.org/10.4302/plp.v18i3.1408

Abstract

This study investigates (99.8-x) Sb2O3-xNa2O-0.2Eu2O3 glass (10Na-40Na) using FTIR and Eu3+ site-sensitive photoluminescence. FTIR spectroscopy reveals progressive network depolymerization, with non-bridging oxygen (NBO) bands appearing at 300Na-40Na (~1017 and ~833 cm-1). Deconvolution of the Eu3+ 5D0→7F0 emission demonstrates a spectral shift from 576 nm to a nephelauxetically red-shifted 578 nm peak at higher modifier contents. This optical evolution confirms that while Na+ continues promoting [SbO6]- unit formation, higher concentrations (300Na-40Na) additionally drive a network-modifying role that generates polarizable NBOs, causing matrix reorganization and altering the local symmetry around Eu3+ ions.

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References

  1. D. Holland, A.C. Hannon, M.E. Smith, C.E. Johnson, M.F. Thomas, A.M. Beesley, "The role of Sb5+ in the structure of Sb2O3–B2O3 binary glasses—an NMR and Mössbauer spectroscopy study", Solid State Nucl. Magn. Reson. 26 (2004) 172-179. CrossRef
  2. Masuda H., Ohta Y., Morinaga K., J. Jpn. Inst. Met. 59, 31 (1995) CrossRef
  3. N.Y. Elamin, H. Alhussain, Y.G.A. El-Reash, A.M. Abdelghany, M.H. Misbah, "Structure and optical properties of the Tb3+-doped antimony borate glasses", Opt. Quantum Electron. 56 (2024) CrossRef
  4. J. Ashok, M. Kostrzewa, M. Srinivasa Reddy, V. Ravi Kumar, N. Venkatramiah, M. Piasecki, N. Veeraiah, "Structural and physical characteristics of Au2O3-doped sodium antimonate glasses – Part I", J. Am. Ceram. Soc. 102 (2019) CrossRef
  5. P.A. Tanner, Y.Y. Yeung, L. Ning,"What Factors Affect the 5D0 Energy of Eu3+? An Investigation of Nephelauxetic Effects", J. Phys. Chem. A 117 (2013) CrossRef
  6. R.T. Moura, A.N. Carneiro Neto, R.L. Longo, O.L. Malta, "On the calculation and interpretation of covalency in the intensity parameters of 4f–4f transitions in Eu3+ complexes based on the chemical bond overlap polarizability", J. Lumin. 170 (2016) CrossRef
  7. M.T. Soltani, A. Boutarfaia, R. Makhloufi, M. Poulain, "New alkali antimonate glasses", J. Phys. Chem. Solids 64 (2003) CrossRef
  8. C.A. Cody, L. DiCarlo, R.K. Darlington, "Vibrational and thermal study of antimony oxides", Inorg. Chem. 18 (1979) CrossRef
  9. K. Terashima, T. Hashimoto, T. Uchino, S.-H. Kim, T. Yoko, "Structure and Nonlinear Optical Properties of Sb2O3-B2O3 Binary Glasses", J. Ceram. Soc. Jpn. 104 (1996) CrossRef

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Published

2026-10-18

How to Cite

[1]
S. Rezgui, L. Beghdadi, M. Hamzaoui, N. Guesmia, M. T. Soltani, and M. Baazouzi, “Probing Network Depolymerization and NBO Creation in Na2O-Sb2O3 Glasses via Site-Sensitive Eu3+ Photoluminescence”, Photonics Lett. Pol., vol. 18, no. 3, pp. 35–37, Oct. 2026.

Issue

Vol. 18 No. 3 (2026): Photonics Letters of Poland Vol.18 No.3

Section

Articles

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Copyright (c) 2026 Sayah Rezgui, Lina Beghdadi, Majda Hamzaoui, Nesrine Guesmia, Mohamed Toufik Soltani, Mourad Baazouzi

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