Finite size effects: deuterium diffusion in nm thick vanadium layers
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 s...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2017-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aa94df |
| _version_ | 1827873467338326016 |
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| author | Wen Huang Gunnar K Pálsson Martin Brischetto Heikki Palonen Sotirios A Droulias Ola Hartmann Max Wolff Björgvin Hjörvarsson |
| author_facet | Wen Huang Gunnar K Pálsson Martin Brischetto Heikki Palonen Sotirios A Droulias Ola Hartmann Max Wolff Björgvin Hjörvarsson |
| author_sort | Wen Huang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T16:37:27Z |
| format | Article |
| id | doaj.art-69d0b9f28123460dabfec23bbb45eb11 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:37:27Z |
| publishDate | 2017-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-69d0b9f28123460dabfec23bbb45eb112023-08-08T14:48:28ZengIOP PublishingNew Journal of Physics1367-26302017-01-01191212300410.1088/1367-2630/aa94dfFinite size effects: deuterium diffusion in nm thick vanadium layersWen Huang0https://orcid.org/0000-0002-2072-7173Gunnar K Pálsson1Martin Brischetto2Heikki Palonen3Sotirios A Droulias4Ola Hartmann5Max Wolff6Björgvin Hjörvarsson7https://orcid.org/0000-0003-1803-9467Department of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenDepartment of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenDepartment of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenDepartment of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenDepartment of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenDepartment of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenDepartment of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenDepartment of Physics and Astronomy, Uppsala University , Box 516, SE-751 20, Uppsala, SwedenWe 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.https://doi.org/10.1088/1367-2630/aa94dfsuperlatticesoptical transmissiondeuterium diffusionoctahedral sites66.30.-h68.35.Fx |
| spellingShingle | Wen Huang Gunnar K Pálsson Martin Brischetto Heikki Palonen Sotirios A Droulias Ola Hartmann Max Wolff Björgvin Hjörvarsson Finite size effects: deuterium diffusion in nm thick vanadium layers New Journal of Physics superlattices optical transmission deuterium diffusion octahedral sites 66.30.-h 68.35.Fx |
| title | Finite size effects: deuterium diffusion in nm thick vanadium layers |
| title_full | Finite size effects: deuterium diffusion in nm thick vanadium layers |
| title_fullStr | Finite size effects: deuterium diffusion in nm thick vanadium layers |
| title_full_unstemmed | Finite size effects: deuterium diffusion in nm thick vanadium layers |
| title_short | Finite size effects: deuterium diffusion in nm thick vanadium layers |
| title_sort | finite size effects deuterium diffusion in nm thick vanadium layers |
| topic | superlattices optical transmission deuterium diffusion octahedral sites 66.30.-h 68.35.Fx |
| url | https://doi.org/10.1088/1367-2630/aa94df |
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