| Autor: |
Wen Huang, Gunnar K Pálsson, Martin Brischetto, Heikki Palonen, Sotirios A Droulias, Ola Hartmann, Max Wolff, Björgvin Hjörvarsson |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
New Journal of Physics, Vol 19, Iss 12, p 123004 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/aa94df |
| Popis: |
We investigate the effect of finite size on the chemical diffusion of deuterium in extremely thin V(001) layers. A five fold increase in the diffusion coefficient is observed at concentrations around 0.2 [D/V], when the thickness of the V is decreased from 28 to 14 atomic layers (≈2.1–4.2 nm). The size dependent deuterium–deuterium interaction energy is argued to be the root of the observed changes as the diffusion rates are similar at low concentrations. The results demonstrate the feasibility of using finite-size effects to enhance the chemical diffusion of light interstitials in solids. We discuss the general applicability of these effects to other systems. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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