Otro
Densification of Mn-doped tin oxide films by conventional heating and microwave heating treatment
Registro en:
Physica Scripta T, v. T115, p. 291-293.
0281-1847
10.1238/Physica.Topical.115a00291
WOS:000204272100079
2-s2.0-42149134826
Autor
Rizzato, A. P.
Santilli, Celso Valentim
Pulcinelli, Sandra Helena
Stuerga, D.
Chaumont, D.
Briois, V.
Resumen
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.