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A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units
The structure of a decagonal quasicrystal in the Zn(58)Mg(40)Y(2) (at.%) alloy was studied using electron diffraction and atomic resolution Z-contrast imaging techniques. This stable Frank–Kasper Zn–Mg–Y decagonal quasicrystal has an atomic structure which can be modeled with a rhombic/hexagonal til...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7201276/ https://www.ncbi.nlm.nih.gov/pubmed/32431836 http://dx.doi.org/10.1107/S2052252520004297 |
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author | Wang, W. Z. Zhou, X. Z. Yang, Z. Q. Qi, Y. Ye, H. Q. |
author_facet | Wang, W. Z. Zhou, X. Z. Yang, Z. Q. Qi, Y. Ye, H. Q. |
author_sort | Wang, W. Z. |
collection | PubMed |
description | The structure of a decagonal quasicrystal in the Zn(58)Mg(40)Y(2) (at.%) alloy was studied using electron diffraction and atomic resolution Z-contrast imaging techniques. This stable Frank–Kasper Zn–Mg–Y decagonal quasicrystal has an atomic structure which can be modeled with a rhombic/hexagonal tiling decorated with icosahedral units at each vertex. No perfect decagonal clusters were observed in the Zn–Mg–Y decagonal quasicrystal, which differs from the Zn–Mg–Dy decagonal crystal with the same space group P10/mmm. Y atoms occupy the center of ‘dented decagon’ motifs consisting of three fat rhombic and two flattened hexagonal tiles. About 75% of fat rhombic tiles are arranged in groups of five forming star motifs, while the others connect with each other in a ‘zigzag’ configuration. This decagonal quasicrystal has a composition of Zn(68.3)Mg(29.1)Y(2.6) (at.%) with a valence electron concentration (e/a) of about 2.03, which is in accord with the Hume–Rothery criterion for the formation of the Zn-based quasicrystal phase (e/a = 2.0–2.15). |
format | Online Article Text |
id | pubmed-7201276 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-72012762020-05-19 A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units Wang, W. Z. Zhou, X. Z. Yang, Z. Q. Qi, Y. Ye, H. Q. IUCrJ Research Papers The structure of a decagonal quasicrystal in the Zn(58)Mg(40)Y(2) (at.%) alloy was studied using electron diffraction and atomic resolution Z-contrast imaging techniques. This stable Frank–Kasper Zn–Mg–Y decagonal quasicrystal has an atomic structure which can be modeled with a rhombic/hexagonal tiling decorated with icosahedral units at each vertex. No perfect decagonal clusters were observed in the Zn–Mg–Y decagonal quasicrystal, which differs from the Zn–Mg–Dy decagonal crystal with the same space group P10/mmm. Y atoms occupy the center of ‘dented decagon’ motifs consisting of three fat rhombic and two flattened hexagonal tiles. About 75% of fat rhombic tiles are arranged in groups of five forming star motifs, while the others connect with each other in a ‘zigzag’ configuration. This decagonal quasicrystal has a composition of Zn(68.3)Mg(29.1)Y(2.6) (at.%) with a valence electron concentration (e/a) of about 2.03, which is in accord with the Hume–Rothery criterion for the formation of the Zn-based quasicrystal phase (e/a = 2.0–2.15). International Union of Crystallography 2020-04-23 /pmc/articles/PMC7201276/ /pubmed/32431836 http://dx.doi.org/10.1107/S2052252520004297 Text en © Wang et al. 2020 http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Research Papers Wang, W. Z. Zhou, X. Z. Yang, Z. Q. Qi, Y. Ye, H. Q. A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units |
title | A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units |
title_full | A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units |
title_fullStr | A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units |
title_full_unstemmed | A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units |
title_short | A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units |
title_sort | decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7201276/ https://www.ncbi.nlm.nih.gov/pubmed/32431836 http://dx.doi.org/10.1107/S2052252520004297 |
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