Densification of Mn-doped tin oxide films by conventional heating and microwave heating treatment
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Data
2005-12-01
Autores
Rizzato, A. P. [UNESP]
Santilli, Celso Valentim [UNESP]
Pulcinelli, Sandra Helena [UNESP]
Stuerga, D.
Chaumont, D.
Briois, V.
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Resumo
Mn(II) doped SnO2 thin films used for shielding fluoride glasses against corrosion were investigated by x-ray absorption spectroscopy (EXAFS and XANE)S at the Sn and Mn K-edges. The effect of firing treatment on the densification of the films was studied. It has been evidenced a partial change of Mn valence from 2.3 to 2.6 upon heating which is attributed to a change of ratios of two Mn sites: grafted divalent Mn ions at the surface of SnO 2 nanocrystallites and trivalent Mn ions embedded into a substitutional solid solution with Sn. © Physica Scripta 2005.
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Palavras-chave
Densification, Extended X ray absorption fine structure spectroscopy, Manganese, Microwave heating, Tin dioxide, Fluoride glasses, Tin oxide films, Oxide films
Como citar
Physica Scripta T, v. T115, p. 291-293.