Abstract
Our earlier molecular dynamics results show that the construction of a strained yttria-stabilized zirconia (YSZ)/CeO2 superlattice considerably enhances oxygen ion diffusion. In the present study, effect of several parameters (e.g., Y2O3 concentrations, stacking periodicity, and temperature) on oxygen ion diffusion in strained YSZ/CeO2 superlattice were optimized to rationalize the understanding of the process mechanism. We found that self-diffusion coefficient of O ions reaches a maximum at around 9.1 mol% Y2O3 concentration, and the increment of CeO2YSZ ratio enhances oxygen ion diffusion. Moreover, activation energy for oxygen ion diffusion in the YSZ/CeO2 superlattice (9 kcal/mol) was found to be lower than that observed in the bulk YSZ (15 kcal/mol).
Original language | English |
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Pages (from-to) | 545-548 |
Number of pages | 4 |
Journal | Applied Surface Science |
Volume | 130-132 |
DOIs | |
Publication status | Published - 1998 |
Event | Proceedings of the 1997 4th International Symposium on Atomically Controlled Surfaces and Intefaces, ACSI-4 - Tokyo, Jpn Duration: 1997 Oct 27 → 1997 Oct 30 |
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films