Abstract
A size effect in nonstoichiometric titanium monoxide TiOy and vanadium carbide VCy nanocrystals containing high concentrations of structural vacancies was detected by electronpositron annihilation. The effect consists of a considerable
increase in the positron lifetime with the specific surface area. An analysis of the intensity of a long lifetime surface component in the positron annihilation spectra and the average positron lifetime for different nonstoichiometric compounds indicated a universal character of the observed size effect.
increase in the positron lifetime with the specific surface area. An analysis of the intensity of a long lifetime surface component in the positron annihilation spectra and the average positron lifetime for different nonstoichiometric compounds indicated a universal character of the observed size effect.
| Original language | English |
|---|---|
| Pages (from-to) | 486-488 |
| Journal | Mendeleev Communications |
| Volume | 29 |
| Issue number | 486-488 |
| DOIs | |
| Publication status | Published - 2019 |
Fields of Expertise
- Advanced Materials Science