@article{SongSchmidSrotetal.2014,
  author    = {Song, Kepeng and Schmid, Herbert K. and Srot, Vesna and Gilardi, Elisa and Gregori, Giuliano and Du, Kui and Maier, Joachim and van Aken, Peter A.},
  title     = {Cerium reduction at the interface between ceria and yttria-stabilised zirconia and implications for interfacial oxygen non-stoichiometry},
  journal   = {APL Materials},
  volume    = {2},
  number    = {3},
  issn      = {2166-532X},
  doi       = {10.1063/1.4867556},
  institution = {Innovative Electron Microscopy},
  pages     = {32104},
  year      = {2014},
  abstract  = {Epitaxial CeO 2 films with different thickness were grown on Y 2 O 3 stabilised Zirconia substrates. Reduction of cerium ions at the interface between CeO 2 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 Ce 4+ to Ce 3+ 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.},
  language  = {en}
}