Publications

Authors:

Cassetta, Michele; De Bona, Emanuele; Sambugaro, Alessia; Enrichi, Francesco; Daldosso, Nicola; Giannetta, Beatrice; Zaccone, Claudio; Biesuz, Mattia; Sglavo, Vincenzo; Almeev, Renat; Nodari, Luca; Giordano, Daniele; Mariotto, Gino

Title:

Fe-dependent structural evolution of peralkaline soda aluminosilicate glasses: Iron speciation vs. glass transition

Year:

2025

Type of item:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Language:

Inglese

Format:

A Stampa

Referee:

Sì

Name of journal:

CHEMICAL GEOLOGY

ISSN of journal:

0009-2541

N° Volume:

674

Page numbers:

1-10

Keyword:

Iron, Soda, Aluminosilicate, Glasses, Glass transition, Mössbauer, Raman, FTIR, ATR

Short description of contents:

The incorporation of iron into peralkaline silicate glasses significantly impacts their structural and thermal properties. Here we investigate how addition of iron influences the network connectivity (short- and medium-range order) and glass transition temperature (Tg) with particular regard to the iron speciation and the Fe2+ and Fe3+ coordination state. We also found a sort of tipping point in iron concentration beyond which the short-range structures evolve linearly with density while the medium-range structure deviates. This behavior seems related to a re-enrichment of tetrahedral units triggered by iron self-compensation effect explaining the observed jump in Tg.

Web page:

https://doi.org/10.1016/j.chemgeo.2024.122561

Product ID:

143255

Handle IRIS:

11562/1147171

Last Modified:

December 20, 2024

Bibliographic citation:

Cassetta, Michele; De Bona, Emanuele; Sambugaro, Alessia; Enrichi, Francesco; Daldosso, Nicola; Giannetta, Beatrice; Zaccone, Claudio; Biesuz, Mattia; Sglavo, Vincenzo; Almeev, Renat; Nodari, Luca; Giordano, Daniele; Mariotto, Gino, Fe-dependent structural evolution of peralkaline soda aluminosilicate glasses: Iron speciation vs. glass transition «CHEMICAL GEOLOGY» , vol. 674 , 2025 , pp. 1-10

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