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Shape Changes in AuPd Alloy Nanoparticles Controlled by Anisotropic Surface Stress Relaxation
https://oist.repo.nii.ac.jp/records/2137
https://oist.repo.nii.ac.jp/records/21372f4b6c9d-aa8d-484b-8033-a0c98c47ee89
名前 / ファイル | ライセンス | アクション |
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AuPd_2021_revised_no_highlights (3) (3.5 MB)
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AuPd_2021_Supporting_Information_revisions_no_ (2.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-05-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Shape Changes in AuPd Alloy Nanoparticles Controlled by Anisotropic Surface Stress Relaxation | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Nelli, Diana
× Nelli, Diana× Roncaglia, Cesare× Ferrando, Riccardo× Minnai, Chloé |
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書誌情報 |
en : The Journal of Physical Chemistry Letters 巻 12, 号 19, p. 4609-4615, 発行日 2021-05-10 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The shape of AuPd nanoparticles is engineered by surface stress relaxation, achieved by varying the Au content in nanoparticles of Pd-rich compositions. AuPd nanoparticles are grown in the gas phase for several compositions and growth conditions. Their structure is atomically resolved by HRTEM/STEM and EDX. In pure Pd distributions the dominant structures are FCC truncated octahedra (TO), while increasing the Au content there is a transition to icosahedral (Ih) structures in which Au atoms are preferentially placed at the nanoparticle surface. The transition is sharper for growth conditions closer to equilibrium. The physical origin of the transition is determined with the aid of computer simulations. Global optimization searches and free energy calculations confirm that Ih become the equilibrium structure for increasing the Au content. Atomic stress calculations demonstrate that the TO → Ih shape change is caused by a better relaxation of anisotropic surface stress in icosahedra. | |||||
出版者 | ||||||
出版者 | American Chemical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1948-7185 | |||||
PubMed番号 | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/33971714 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1021/acs.jpclett.1c00787 | |||||
権利 | ||||||
権利情報 | © 2021 American Chemical Society | |||||
権利 | ||||||
権利情報 | This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://doi.org/10.1021/acs.jpclett.1c00787]. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.1c00787 | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |