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Thermally activated sodium-ion transport and optical properties of NaBa(PO3)3 for high-temperature electronics and energy storage applications.

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Title: Thermally activated sodium-ion transport and optical properties of NaBa(PO3)3 for high-temperature electronics and energy storage applications.
Authors: Karray, M.1 (AUTHOR), Bouzayani, Mohamed Mounir2 (AUTHOR), Nasri, S.1,3 (AUTHOR) nasri.saber.1@gmail.com, Marzougi, H.4,5 (AUTHOR), Elghmaz, E. A.6 (AUTHOR), Ghzaiel, M. B.1,7 (AUTHOR), Oueslati, A.1 (AUTHOR)
Source: Journal of Materials Science: Materials in Electronics. Apr2026, Vol. 37 Issue 12, p1-23. 23p.
Abstract: This study examines the structural, optical, and electrical properties of NaBa(PO3)3 to evaluate its potential in solid-state ionic devices. Phase-pure NaBa(PO3)3 was synthesized by a high-temperature solid-state reaction and characterized using XRD, FTIR, UV–Vis, and AC impedance spectroscopy. Rietveld refinement confirmed the formation of an orthorhombic P212121 structure. The material exhibits a wide optical band gap and thermally activated Na+ conduction consistent with polaron hopping, highlighting its potential for high-temperature ionic and dielectric applications. Impedance and modulus analyses reveal non-Debye relaxation and distinct grain and grain-boundary contributions. Its negative temperature coefficient of resistivity and high sensitivity index highlight strong potential for high-temperature thermistor and solid-state electrolyte applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Apr2026, Vol. 37 Issue 12, p1-23. 23p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study examines the structural, optical, and electrical properties of NaBa(PO3)3 to evaluate its potential in solid-state ionic devices. Phase-pure NaBa(PO3)3 was synthesized by a high-temperature solid-state reaction and characterized using XRD, FTIR, UV–Vis, and AC impedance spectroscopy. Rietveld refinement confirmed the formation of an orthorhombic P212121 structure. The material exhibits a wide optical band gap and thermally activated Na+ conduction consistent with polaron hopping, highlighting its potential for high-temperature ionic and dielectric applications. Impedance and modulus analyses reveal non-Debye relaxation and distinct grain and grain-boundary contributions. Its negative temperature coefficient of resistivity and high sensitivity index highlight strong potential for high-temperature thermistor and solid-state electrolyte applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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