Influence of Eu<sup>3+</sup> Concentration on the Structural and Physical Properties of Tellurite-Based Glasses

Akanksha Tiwari; Preeti Chincholikar; Sandeep Kumar Sharma; Ghizal Firdous Ansari

doi:doi:10.11648/j.jpmt.20261102.12

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Influence of Eu³⁺ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses

Akanksha Tiwari, Preeti Chincholikar, Sandeep Kumar Sharma, Ghizal Firdous Ansari^*

Published in Journal of Photonic Materials and Technology (Volume 11, Issue 2)

Received: 13 August 2026 Accepted: 25 August 2026 Published: 20 September 2026

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Abstract

Eu³⁺-doped sodium tungsten tellurite glasses of composition (79.5−x) TeO₂-10WO₃-10Na₂O-xEu₂O₃ (x = 0.5, 1.0 and 1.5 mol%), designated TNWEu (0.5), TNWEu (1.0) and TNWEu (1.5), were synthesized by the conventional melt-quenching technique to investigate the role of Eu³⁺ concentration in governing the structural, thermal and physical behaviour of the tellurite glass network. Differential scanning calorimetry of the base ternary glass revealed a glass transition temperature (Tg) of 320°C, a melting temperature of 350°C and a crystallization onset (Tc) of 470°C, yielding a thermal stability parameter ΔT (= Tc − Tg) of 150°C, which exceeds values reported for conventional tellurite (102°C) and fluorophosphate (87°C) glasses and indicates favourable resistance to devitrification. Physical parameters obtained from density and molecular weight showed systematic and monotonic trends with increasing Eu₂O₃ content: density increased from 4.546 to 4.662 g/cc while molar volume decreased from 34.840 to 34.660 cc/mol, Eu³⁺ ion concentration rose from 1.611 × 10²⁰ to 4.848 × 10²⁰ ions/cc, inter-nuclear distance and polaron radius decreased, field strength increased from 0.888 × 10¹⁴ to 1.854 × 10¹⁴ cm^-2, and oxygen packing density increased from 234.67 to 271.03 mol/l. These correlated trends indicate that Eu³⁺ ions progressively densify and cross-link the tellurite network, reducing free volume and non-bridging oxygen content as the dopant concentration increases. The combined structural compactness and thermal stability of the TNWEu glass system suggest its suitability as a host matrix for rare-earth-based photonic, optical amplification and solid-state lighting applications.

Published in	Journal of Photonic Materials and Technology (Volume 11, Issue 2)
DOI	10.11648/j.jpmt.20261102.12
Page(s)	33-38
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2026. Published by Science Publishing Group

Keywords

Tellurite Glass, Europium (III) Doping, Rare-earth Ions, Glass Transition Temperature, Thermal Stability, Physical Properties, Oxygen Packing Density

References

[1]	Dimitrov V, Komatsu T. Classification of oxide glasses: A polarizability approach. J Solid State Chem. 2002; 163: 100-112.
[2]	El-Mallawany R. Tellurite Glasses Handbook: Physical Properties and Data. Boca Raton: CRC Press; 2002.
[3]	Miniscalco WJ. Rare-earth-doped glasses for fiber amplifiers at 1.5 μm. J Lightwave Technol. 1991; 9: 234-250.
[4]	Sekiya T, Mochida N, Ohtsuka A. Raman spectra and structures of TeO2-based glasses. J Non-Cryst Solids. 1994; 168: 106-114.
[5]	Lin H, Calvez L, Rozier P, et al. Structural and thermal properties of tungsten-tellurite glasses. J Non-Cryst Solids. 2007; 353: 146-152.
[6]	Rajendran V, Palanivelu N, Chaudhuri BK, Goswami K. Influence of modifiers on physical properties of tellurite glasses. J Non-Cryst Solids. 2003; 320: 195-209.
[7]	Binnemans K. Interpretation of europium (III) spectra. Coord Chem Rev. 2015; 295: 1-45.
[8]	Reisfeld R. Spectroscopy and applications of rare-earth-doped glasses. J Alloys Compd. 2002; 341: 56-61.
[9]	Digonnet MJF, ed. Rare-Earth-Doped Fiber Lasers and Amplifiers. 2nd ed. Boca Raton: CRC Press; 2001.
[10]	Sidebottom DL. Structural relaxation and glass transition in oxide glasses. Phys Rev B. 2000; 61: 14507-14512.
[11]	Shelby JE. Introduction to Glass Science and Technology. 2nd ed. Cambridge: Royal Society of Chemistry; 2005.
[12]	El-Mallawany RAH, Ahmed IA, Abdalla MD. Structural and thermal studies of rare-earth doped tellurite glasses. Mater Chem Phys. 2008; 109: 291-296.
[13]	Yamane M, Asahara Y. Glasses for Photonics. Cambridge: Cambridge University Press; 2000.
[14]	Dietzel A. Glass structure and glass properties. Glasstech Ber. 1968; 22: 41-48.
[15]	Yuan J, Shen SX, Wang WC, Peng MY, Zhang QY, Jiang ZH. Enhanced 2.0 μm emission from Ho3⁺ bridged by Yb3⁺ in Nd3⁺/Yb3⁺/Ho3⁺ triply doped tungsten tellurite glasses for a diode-pump 2.0 μm laser. J Appl Phys. 2013; 114: 133506. https://doi.org/10.1063/1.4823819
[16]	Liao M, Sun H, Wen L, Fang Y, Hu L. Effect of alkali and alkaline earth fluoride introduction on thermal stability and structure of fluorophosphate glasses. Mater Chem Phys. 2006; 98(1): 154-158. https://doi.org/10.1016/j.matchemphys.2005.09.006
[17]	Kumari H, Ansari GF, Patel K, Dhiman SK, Mahajan SK. Studies of structural and optical properties of tungsten tellurite glasses. Mater Today Proc. 2022; 59(1):[page numbers not provided]. https://doi.org/10.1016/j.matpr.2022.03.027
[18]	Bairagi S, Ansari GF, Bartwal KS, Dhiman SK, Mahajan SK. Studies on optical and electronic characteristics of ternary zinc-tellurite glasses with varying Zn doping concentration. Mater Today Proc. 2023; 80(2): 427-433. https://doi.org/10.1016/j.matpr.2022.10.192
[19]	Dimitrov V, Sakka S. Electronic oxide polarizability and optical basicity of simple oxides. I. J Appl Phys. 1996; 79: 1736-1740.
[20]	Mariselvam R, Kumar RA, Liu J. Concentration-dependence and luminescence studies of erbium-doped barium lithium fluoroborate glasses. Opt Laser Technol. 2019; 116: 39-45.
[21]	Azlan MN, Halimah MK, Shafinas SZ, Daud WM. Polarizability and optical basicity of Er3⁺ ions doped tellurite-based glasses. Chalcogenide Lett. 2014; 11: 319-335.
[22]	Herzfeld KF. On atomic properties which make an element a metal. Phys Rev. 1927; 29: 701-705.
[23]	Meena SL, Bhatt SC. Effect of Nd2O3 doping on physical and optical properties of zinc-lithium-bismuth-borate glasses. J Rare Earths. 2009; 27: 349-354.
[24]	Halimah MK, Daud WM, Sidek HAA, Zaidan AW, Zainal AS. Optical properties of ternary tellurite glasses. Mater Sci-Pol. 2010; 28: 173-180.
[25]	Nazrin K, Halimah MK, Sidek HAA, Azlan MN, Muhammad FD. Physical, structural and optical properties of erbium-doped tellurite-based glasses. Physica B. 2019; 552: 116-123.
[26]	Suhasini T, Kumar JS, Sasikala T, Jang K, Lee HS, Jayasimhadri M, Jeong JH, Yi SS, Moorthy LR. Absorption and fluorescence properties of Er3⁺ ionsdoped lead containing lithium fluoroborate glasses, Opt. Mater. 31 (2009) 1167-1172.

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APA Style

Tiwari, A., Chincholikar, P., Sharma, S. K., Ansari, G. F. (2026). Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses. Journal of Photonic Materials and Technology, 11(2), 33-38. https://doi.org/10.11648/j.jpmt.20261102.12

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ACS Style

Tiwari, A.; Chincholikar, P.; Sharma, S. K.; Ansari, G. F. Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses. J. Photonic Mater. Technol. 2026, 11(2), 33-38. doi: 10.11648/j.jpmt.20261102.12

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AMA Style

Tiwari A, Chincholikar P, Sharma SK, Ansari GF. Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses. J Photonic Mater Technol. 2026;11(2):33-38. doi: 10.11648/j.jpmt.20261102.12

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@article{10.11648/j.jpmt.20261102.12,
  author = {Akanksha Tiwari and Preeti Chincholikar and Sandeep Kumar Sharma and Ghizal Firdous Ansari},
  title = {Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses},
  journal = {Journal of Photonic Materials and Technology},
  volume = {11},
  number = {2},
  pages = {33-38},
  doi = {10.11648/j.jpmt.20261102.12},
  url = {https://doi.org/10.11648/j.jpmt.20261102.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jpmt.20261102.12},
  abstract = {Eu3⁺-doped sodium tungsten tellurite glasses of composition (79.5−x) TeO2-10WO3-10Na2O-xEu2O3 (x = 0.5, 1.0 and 1.5 mol%), designated TNWEu (0.5), TNWEu (1.0) and TNWEu (1.5), were synthesized by the conventional melt-quenching technique to investigate the role of Eu3⁺ concentration in governing the structural, thermal and physical behaviour of the tellurite glass network. Differential scanning calorimetry of the base ternary glass revealed a glass transition temperature (Tg) of 320°C, a melting temperature of 350°C and a crystallization onset (Tc) of 470°C, yielding a thermal stability parameter ΔT (= Tc − Tg) of 150°C, which exceeds values reported for conventional tellurite (102°C) and fluorophosphate (87°C) glasses and indicates favourable resistance to devitrification. Physical parameters obtained from density and molecular weight showed systematic and monotonic trends with increasing Eu2O3 content: density increased from 4.546 to 4.662 g/cc while molar volume decreased from 34.840 to 34.660 cc/mol, Eu3⁺ ion concentration rose from 1.611 × 1020 to 4.848 × 1020 ions/cc, inter-nuclear distance and polaron radius decreased, field strength increased from 0.888 × 1014 to 1.854 × 1014 cm-2, and oxygen packing density increased from 234.67 to 271.03 mol/l. These correlated trends indicate that Eu3⁺ ions progressively densify and cross-link the tellurite network, reducing free volume and non-bridging oxygen content as the dopant concentration increases. The combined structural compactness and thermal stability of the TNWEu glass system suggest its suitability as a host matrix for rare-earth-based photonic, optical amplification and solid-state lighting applications.},
 year = {2026}
}

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TY  - JOUR
T1  - Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses
AU  - Akanksha Tiwari
AU  - Preeti Chincholikar
AU  - Sandeep Kumar Sharma
AU  - Ghizal Firdous Ansari
Y1  - 2026/09/20
PY  - 2026
N1  - https://doi.org/10.11648/j.jpmt.20261102.12
DO  - 10.11648/j.jpmt.20261102.12
T2  - Journal of Photonic Materials and Technology
JF  - Journal of Photonic Materials and Technology
JO  - Journal of Photonic Materials and Technology
SP  - 33
EP  - 38
PB  - Science Publishing Group
SN  - 2469-8431
UR  - https://doi.org/10.11648/j.jpmt.20261102.12
AB  - Eu3⁺-doped sodium tungsten tellurite glasses of composition (79.5−x) TeO2-10WO3-10Na2O-xEu2O3 (x = 0.5, 1.0 and 1.5 mol%), designated TNWEu (0.5), TNWEu (1.0) and TNWEu (1.5), were synthesized by the conventional melt-quenching technique to investigate the role of Eu3⁺ concentration in governing the structural, thermal and physical behaviour of the tellurite glass network. Differential scanning calorimetry of the base ternary glass revealed a glass transition temperature (Tg) of 320°C, a melting temperature of 350°C and a crystallization onset (Tc) of 470°C, yielding a thermal stability parameter ΔT (= Tc − Tg) of 150°C, which exceeds values reported for conventional tellurite (102°C) and fluorophosphate (87°C) glasses and indicates favourable resistance to devitrification. Physical parameters obtained from density and molecular weight showed systematic and monotonic trends with increasing Eu2O3 content: density increased from 4.546 to 4.662 g/cc while molar volume decreased from 34.840 to 34.660 cc/mol, Eu3⁺ ion concentration rose from 1.611 × 1020 to 4.848 × 1020 ions/cc, inter-nuclear distance and polaron radius decreased, field strength increased from 0.888 × 1014 to 1.854 × 1014 cm-2, and oxygen packing density increased from 234.67 to 271.03 mol/l. These correlated trends indicate that Eu3⁺ ions progressively densify and cross-link the tellurite network, reducing free volume and non-bridging oxygen content as the dopant concentration increases. The combined structural compactness and thermal stability of the TNWEu glass system suggest its suitability as a host matrix for rare-earth-based photonic, optical amplification and solid-state lighting applications.
VL  - 11
IS  - 2
ER  -

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Author Information

Akanksha Tiwari

Department of Chemistry, Madhyanchal Professional University, Bhopal, India
Preeti Chincholikar

Department of Chemistry, Madhyanchal Professional University, Bhopal, India
Sandeep Kumar Sharma

Department of Physics, Govt. Art’s and Commerce College Majhauli, Sidhi, India
Ghizal Firdous Ansari

Department of Physics, Madhyanchal Professional University, Bhopal, India

Contact Email

http://orcid.org/0000-0002-9278-5436

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APA Style

Tiwari, A., Chincholikar, P., Sharma, S. K., Ansari, G. F. (2026). Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses. Journal of Photonic Materials and Technology, 11(2), 33-38. https://doi.org/10.11648/j.jpmt.20261102.12

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ACS Style

Tiwari, A.; Chincholikar, P.; Sharma, S. K.; Ansari, G. F. Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses. J. Photonic Mater. Technol. 2026, 11(2), 33-38. doi: 10.11648/j.jpmt.20261102.12

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AMA Style

Tiwari A, Chincholikar P, Sharma SK, Ansari GF. Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses. J Photonic Mater Technol. 2026;11(2):33-38. doi: 10.11648/j.jpmt.20261102.12

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@article{10.11648/j.jpmt.20261102.12,
  author = {Akanksha Tiwari and Preeti Chincholikar and Sandeep Kumar Sharma and Ghizal Firdous Ansari},
  title = {Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses},
  journal = {Journal of Photonic Materials and Technology},
  volume = {11},
  number = {2},
  pages = {33-38},
  doi = {10.11648/j.jpmt.20261102.12},
  url = {https://doi.org/10.11648/j.jpmt.20261102.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jpmt.20261102.12},
  abstract = {Eu3⁺-doped sodium tungsten tellurite glasses of composition (79.5−x) TeO2-10WO3-10Na2O-xEu2O3 (x = 0.5, 1.0 and 1.5 mol%), designated TNWEu (0.5), TNWEu (1.0) and TNWEu (1.5), were synthesized by the conventional melt-quenching technique to investigate the role of Eu3⁺ concentration in governing the structural, thermal and physical behaviour of the tellurite glass network. Differential scanning calorimetry of the base ternary glass revealed a glass transition temperature (Tg) of 320°C, a melting temperature of 350°C and a crystallization onset (Tc) of 470°C, yielding a thermal stability parameter ΔT (= Tc − Tg) of 150°C, which exceeds values reported for conventional tellurite (102°C) and fluorophosphate (87°C) glasses and indicates favourable resistance to devitrification. Physical parameters obtained from density and molecular weight showed systematic and monotonic trends with increasing Eu2O3 content: density increased from 4.546 to 4.662 g/cc while molar volume decreased from 34.840 to 34.660 cc/mol, Eu3⁺ ion concentration rose from 1.611 × 1020 to 4.848 × 1020 ions/cc, inter-nuclear distance and polaron radius decreased, field strength increased from 0.888 × 1014 to 1.854 × 1014 cm-2, and oxygen packing density increased from 234.67 to 271.03 mol/l. These correlated trends indicate that Eu3⁺ ions progressively densify and cross-link the tellurite network, reducing free volume and non-bridging oxygen content as the dopant concentration increases. The combined structural compactness and thermal stability of the TNWEu glass system suggest its suitability as a host matrix for rare-earth-based photonic, optical amplification and solid-state lighting applications.},
 year = {2026}
}

Copy | Download

TY  - JOUR
T1  - Influence of Eu3+ Concentration on the Structural and Physical Properties of Tellurite-Based Glasses
AU  - Akanksha Tiwari
AU  - Preeti Chincholikar
AU  - Sandeep Kumar Sharma
AU  - Ghizal Firdous Ansari
Y1  - 2026/09/20
PY  - 2026
N1  - https://doi.org/10.11648/j.jpmt.20261102.12
DO  - 10.11648/j.jpmt.20261102.12
T2  - Journal of Photonic Materials and Technology
JF  - Journal of Photonic Materials and Technology
JO  - Journal of Photonic Materials and Technology
SP  - 33
EP  - 38
PB  - Science Publishing Group
SN  - 2469-8431
UR  - https://doi.org/10.11648/j.jpmt.20261102.12
AB  - Eu3⁺-doped sodium tungsten tellurite glasses of composition (79.5−x) TeO2-10WO3-10Na2O-xEu2O3 (x = 0.5, 1.0 and 1.5 mol%), designated TNWEu (0.5), TNWEu (1.0) and TNWEu (1.5), were synthesized by the conventional melt-quenching technique to investigate the role of Eu3⁺ concentration in governing the structural, thermal and physical behaviour of the tellurite glass network. Differential scanning calorimetry of the base ternary glass revealed a glass transition temperature (Tg) of 320°C, a melting temperature of 350°C and a crystallization onset (Tc) of 470°C, yielding a thermal stability parameter ΔT (= Tc − Tg) of 150°C, which exceeds values reported for conventional tellurite (102°C) and fluorophosphate (87°C) glasses and indicates favourable resistance to devitrification. Physical parameters obtained from density and molecular weight showed systematic and monotonic trends with increasing Eu2O3 content: density increased from 4.546 to 4.662 g/cc while molar volume decreased from 34.840 to 34.660 cc/mol, Eu3⁺ ion concentration rose from 1.611 × 1020 to 4.848 × 1020 ions/cc, inter-nuclear distance and polaron radius decreased, field strength increased from 0.888 × 1014 to 1.854 × 1014 cm-2, and oxygen packing density increased from 234.67 to 271.03 mol/l. These correlated trends indicate that Eu3⁺ ions progressively densify and cross-link the tellurite network, reducing free volume and non-bridging oxygen content as the dopant concentration increases. The combined structural compactness and thermal stability of the TNWEu glass system suggest its suitability as a host matrix for rare-earth-based photonic, optical amplification and solid-state lighting applications.
VL  - 11
IS  - 2
ER  -

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