Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Unveiling the relationship between packing fraction, elastic properties, and ionic conductivity in highly modified alkali-borate glasses
Δημιουργός/Συγγραφέας:	Fang, Ningyuan Tagiara, Nagia S. Nascimento, Marcio L.F. Bragatto, Caio B.
Ημερομηνία:	2025
Γλώσσα:	Αγγλικά
ISSN:	01672738
DOI:	10.1016/j.ssi.2025.116899
Περίληψη:	The ionic conductivity of glasses can be understood through the Anderson and Stuart model, in which the process's activation energy is divided into two parts — the binding and the strain energies. In turn, the strain energy mostly depends on the glass's elastic properties, which can be related to the packing fraction according to the Makishima and Mackenzie model. In this work, the possible dependency between packing fractions, strain and ionic conductivity activation energies were studied for lithium and sodium borate glasses containing high alkali-oxide concentrations. A linear dependency was found for compositions up to ≈ 33 mol% alkali oxide, a composition known from the boron anomaly model. This result reinforces the strong electrolyte behavior of the glass up to ≈ 33 mol% concentration for both systems with an activation enthalpy of 0.6 eV while indicating a significant change in the charge carrier's behavior. Strain energy prediction fails for large amounts of alkali oxides, indicating other factors besides the elastic property are involved in the ionic conductivity of the highly modified glasses.
Τίτλος πηγής δημοσίευσης:	Solid State Ionics
Τόμος/Κεφάλαιο:	427
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	ionic glasses borate glasses elastic properties packing fraction
Χρηματοδότης:	National Science Foundation (NSF) European Union Greece CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil) CNPq (National Council for Scientific and Technological Development)
Αναγνωριστικό χρηματοδοτικού προγράμματος:	NSF-DMR-2203142 NSF-PHY-2349118 MIS 5002772 Finance Code 001 304584/2023-1 88887.887779/2023-00
Κάτοχος πνευματικών δικαιωμάτων:	© 2025 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1016/j.ssi.2025.116899
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο