Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment
We present a new method for the determination of self-diffusivities in solids and the corresponding activation energy of diffusion using in-situ Neutron Reflectometry. In contrast to the classical ex-situ approach based on a sequence of isothermal measurements at different temperatures, the in-situ...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-01-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2022.2114814 |
| _version_ | 1811257927526252544 |
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| author | Erwin Hüger Jochen Stahn Harald Schmidt |
| author_facet | Erwin Hüger Jochen Stahn Harald Schmidt |
| author_sort | Erwin Hüger |
| collection | DOAJ |
| description | We present a new method for the determination of self-diffusivities in solids and the corresponding activation energy of diffusion using in-situ Neutron Reflectometry. In contrast to the classical ex-situ approach based on a sequence of isothermal measurements at different temperatures, the in-situ method allows one to work with a single experiment based on ramping the temperature with a constant rate. Our experiment demonstrates the success of the method for the model system of amorphous germanium. The activation energy of 2.2 eV and the absolute values of diffusivities achieved by the new method are in good agreement with the results of the classical approach, while a significantly lower amount of experimental time and samples are necessary. The presented method allows for an all-in-one type of experiment which can provide clearer and quicker results than similar methods using isothermal annealing procedures. |
| first_indexed | 2024-04-12T18:05:03Z |
| format | Article |
| id | doaj.art-45bea2950dea4ca883e924791d35738a |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-04-12T18:05:03Z |
| publishDate | 2023-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-45bea2950dea4ca883e924791d35738a2022-12-22T03:22:00ZengTaylor & Francis GroupMaterials Research Letters2166-38312023-01-01111535910.1080/21663831.2022.2114814Activation energy of diffusion determined from a single in-situ neutron reflectometry experimentErwin Hüger0Jochen Stahn1Harald Schmidt2Clausthaler Zentrum für Materialtechnik, TU Clausthal, Clausthal-Zellerfeld, GermanyLaboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, Villigen, SwitzerlandClausthaler Zentrum für Materialtechnik, TU Clausthal, Clausthal-Zellerfeld, GermanyWe present a new method for the determination of self-diffusivities in solids and the corresponding activation energy of diffusion using in-situ Neutron Reflectometry. In contrast to the classical ex-situ approach based on a sequence of isothermal measurements at different temperatures, the in-situ method allows one to work with a single experiment based on ramping the temperature with a constant rate. Our experiment demonstrates the success of the method for the model system of amorphous germanium. The activation energy of 2.2 eV and the absolute values of diffusivities achieved by the new method are in good agreement with the results of the classical approach, while a significantly lower amount of experimental time and samples are necessary. The presented method allows for an all-in-one type of experiment which can provide clearer and quicker results than similar methods using isothermal annealing procedures.https://www.tandfonline.com/doi/10.1080/21663831.2022.2114814Neutron reflectometryin-situmaterial characterizationtemperature rampactivation energydiffusion |
| spellingShingle | Erwin Hüger Jochen Stahn Harald Schmidt Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment Materials Research Letters Neutron reflectometry in-situ material characterization temperature ramp activation energy diffusion |
| title | Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment |
| title_full | Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment |
| title_fullStr | Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment |
| title_full_unstemmed | Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment |
| title_short | Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment |
| title_sort | activation energy of diffusion determined from a single in situ neutron reflectometry experiment |
| topic | Neutron reflectometry in-situ material characterization temperature ramp activation energy diffusion |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2022.2114814 |
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