Interface effects on the electrical conductivity of oxide thin films
![Fig. 1 Conductance vs. thickness diagrams for (a) Ce0.9Gd0.1O1.95 and (b) nominally pure CeO2 thin films. The films grown on SiO2 are nanocrystalline with an average grain size which varies as a function of the thickness of the film [1]. Reproduced with permission of the PCCP Owner Societies.](/6276985/original-1518447125.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjYyNzY5ODV9--188812a18b9187bac6798d45cf388612f2b11eda)
Fig. 1 Conductance vs. thickness diagrams for (a) Ce0.9Gd0.1O1.95 and (b) nominally pure CeO2 thin films. The films grown on SiO2 are nanocrystalline with an average grain size which varies as a function of the thickness of the film [1]. Reproduced with permission of the PCCP Owner Societies.
![Fig. 2 Arrhenius plot of the Ce0.9Gd0.1O1.95 thin films with different microstructure: epitaxial, nanocrystalline with average grain size 40 nm (ht) and nanocrystalline with average grain size 10 nm (rt) [2,4]. Reproduced with permission of the PCCP Owner Societies.](/6276997/original-1518447126.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjYyNzY5OTd9--f1e57fb4de3d5d35c6a9aa2065d52e8bbf0ff04c)
Fig. 2 Arrhenius plot of the Ce0.9Gd0.1O1.95 thin films with different microstructure: epitaxial, nanocrystalline with average grain size 40 nm (ht) and nanocrystalline with average grain size 10 nm (rt) [2,4]. Reproduced with permission of the PCCP Owner Societies.
![Fig. 3 Oxygen partial pressure dependence of nanocrystalline thin films with an average grain size of 40 nm (black symbols) and 10 nm (red symbols), respectively. Remarkably at pO2 = 10-5 bar, 25% of the total conductivity is electronic [2,4]. Reproduced with permission of the PCCP Owner Societies.](/6277009/original-1518447126.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjYyNzcwMDl9--35923f1a7c5c83cc133ed01d6a4cc6c347df2884)
Fig. 3 Oxygen partial pressure dependence of nanocrystalline thin films with an average grain size of 40 nm (black symbols) and 10 nm (red symbols), respectively. Remarkably at pO2 = 10-5 bar, 25% of the total conductivity is electronic [2,4]. Reproduced with permission of the PCCP Owner Societies.