Abstract
Epitaxial CeO2 films with different thickness were grown on Y2O3 stabilised Zirconia substrates. Reduction of cerium ions at the interface between CeO2 films and yttria stabilised zirconia substrates is demonstrated using aberration-corrected scanning transmission electron microscopy combined with electron energy-loss spectroscopy. It is revealed that most of the Ce ions were reduced from Ce4+ to Ce3+ at the interface region with a decay of several nanometers. Several possibilities of charge compensations are discussed. Irrespective of the details, such local non-stoichiometries are crucial not only for understanding charge transport in such hetero-structures but also for understanding ceria catalytic properties.
Highlights
Epitaxial CeO2 films were grown on Y2O3-stabilized zirconia (YSZ) (111) substrates using pulsed laser deposition
Epitaxial CeO2 films were grown on YSZ (111) substrates using pulsed laser deposition
TEM samples in cross-sectional geometry were prepared by the tripod polishing technique followed by Ar+ ion-milling while cooling the specimen with liquid nitrogen
Summary
Epitaxial CeO2 films were grown on YSZ (111) substrates using pulsed laser deposition. TEM samples in cross-sectional geometry were prepared by the tripod polishing technique followed by Ar+ ion-milling while cooling the specimen with liquid nitrogen. Reduction of cerium ions at the interface between CeO2 films and YSZ substrates is demonstrated using aberration-corrected scanning transmission electron microscopy combined with electron energy-loss spectroscopy.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
