Metallurgy at the nanoscale: domain walls in nanoalloys
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arXiv
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866915530713071616 |
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| author | Breyton, Grégoire Amara, Hakim Nelayah, Jaysen Mottet, Christine Gatti, Riccardo Creuze, Jérôme Moncomble, Adrien Alloyeau, Damien Peña, Nathaly Ortiz Wang, Guillaume Ricolleau, Christian |
| author_facet | Breyton, Grégoire Amara, Hakim Nelayah, Jaysen Mottet, Christine Gatti, Riccardo Creuze, Jérôme Moncomble, Adrien Alloyeau, Damien Peña, Nathaly Ortiz Wang, Guillaume Ricolleau, Christian |
| contents | In binary alloys, domain walls play a central role not only on the phase transitions but also on their physical properties and were at the heart of the 70's metallurgy research. Whereas it can be predicted, with simple physics arguments, that such domain walls cannot exist at the nanometer scale due to the typical lengths of the statistical fluctuations of the order parameter, here we show, with both experimental and numerical approaches how orientational domain walls are formed in CuAu nanoparticles binary model systems. We demonstrate that the formation of domains in larger NPs is driven by elastic strain relaxation which is not needed in smaller NPs where surface effects dominate. Finally, we show how the multivariants NPs tend to form an isotropic material through a continuous model of elasticity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_01769 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Metallurgy at the nanoscale: domain walls in nanoalloys Breyton, Grégoire Amara, Hakim Nelayah, Jaysen Mottet, Christine Gatti, Riccardo Creuze, Jérôme Moncomble, Adrien Alloyeau, Damien Peña, Nathaly Ortiz Wang, Guillaume Ricolleau, Christian Materials Science In binary alloys, domain walls play a central role not only on the phase transitions but also on their physical properties and were at the heart of the 70's metallurgy research. Whereas it can be predicted, with simple physics arguments, that such domain walls cannot exist at the nanometer scale due to the typical lengths of the statistical fluctuations of the order parameter, here we show, with both experimental and numerical approaches how orientational domain walls are formed in CuAu nanoparticles binary model systems. We demonstrate that the formation of domains in larger NPs is driven by elastic strain relaxation which is not needed in smaller NPs where surface effects dominate. Finally, we show how the multivariants NPs tend to form an isotropic material through a continuous model of elasticity. |
| title | Metallurgy at the nanoscale: domain walls in nanoalloys |
| topic | Materials Science |
| url | https://arxiv.org/abs/2510.01769 |