title: Nature of conductivity in SrSiO3-based fast ion conductors.
abstract: In this paper we report the preparation and characterization of Sr1-xNaxSiO3-0.5x samples, recently proposed as oxide ion conductors. We show that Na-doping unlikely takes place in the silicate phase, and that a secondary glassy phase is at the origin of the transport properties, thereby suggesting that the conductivity is due only to a limited extent to oxide ion migration in the crystalline system.
authors.affiliation: Department of Chemistry and INSTM, University of Pavia, Viale Taramelli 16, 27100 Pavia, Italy. cristina.tealdi@unipv.it.
authors.forename: C
authors.initials: C
authors.lastname: Tealdi
authors.forename: L
authors.initials: L
authors.lastname: Malavasi
authors.forename: I
authors.initials: I
authors.lastname: Uda
authors.forename: C
authors.initials: C
authors.lastname: Ferrara
authors.forename: V
authors.initials: V
authors.lastname: Berbenni
authors.forename: P
authors.initials: P
authors.lastname: Mustarelli