Abstract
The competition between the long-range Coulomb attractive and the short-range repulsive interaction in ionic nanocrystals creates an effective negative pressure, which causes the lattice parameter a to increase with decreasing nanoparticle size d. A simple 'Madelung model' is used to predict the dependence of the lattice parameter for CeO2 and BaTiO3 on d, δa/a = α/d, for α = 0.22 and 0.18 Å, respectively. The model predictions are compared with experimental results.
| Original language | English |
|---|---|
| Pages (from-to) | 295-297 |
| Number of pages | 3 |
| Journal | Solid State Communications |
| Volume | 123 |
| Issue number | 6-7 |
| DOIs | |
| State | Published - Aug 2002 |
Keywords
- A. Nanostructures
- A. Surfaces and interfaces
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