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Formation And Structure Of Tin-Iron Oxide Thin-Film Co Sensors

DEPERO, Laura Eleonora;SBERVEGLIERI, Giorgio;
1994-01-01
1994
Nessuno
PE3_5 Electronic properties of materials and transport
JOURNAL OF MATERIALS RESEARCH
sì
2-s2.0-0028433710
WOS:A1994NH28500024
Sì, ma tipo non specificato
Inglese
Internazionale
9
1250
1256
6
Rheotaxial growth and thermal oxidation (RGTO) for depositing thin films is a recognized technique in preparing gas sensitive semiconducting oxides. This paper presents a study performed by x-ray diffraction and scanning Auger microscopy of the mechanisms of growth and formation of the thin films of the new ternary compound Sn1-xFexOy with an iron content in the range 0 < x < 25 at. %. A structural model of this compound, which is found to be stable over a very large range of Sn/Fe ratios, can be derived by partially substituting Fe3+ ions in Sn4+ sites. This is an easy substitution in view of the similar values shown by the ionic radii (Fe3+ = 0.64 angstrom, Sn4+ = 0.71 angstrom) and the Pauling electronegativity (Fe3+ = 1.8, Sn4+ = 1.8) of these two ions. Experimental data, showing that this material is an excellent CO sensor, are reported.
6
info:eu-repo/semantics/article
262
P., Bonzi; Depero, Laura Eleonora; F., Parmigiani; C., Perego; Sberveglieri, Giorgio; G., Quattroni
1 Contributo su Rivista::1.1 Articolo in rivista
none
1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/34162
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