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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.
2020-05-01
Source PublicationIUCRJ
Volume7Pages:535-541
AbstractThe structure of a decagonal quasicrystal in the Zn58Mg40Y2 (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 Zn68.3Mg29.1Y2.6 (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).
DOI10.1107/S2052252520004297
WOS IDWOS:000531814600019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82896
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang, W. Z.,Zhou, X. Z.,Yang, Z. Q.,et al. A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units[J]. IUCRJ,2020,7:535-541.
APA Wang, W. Z.,Zhou, X. Z.,Yang, Z. Q.,Qi, Y.,&Ye, H. Q..(2020).A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units.IUCRJ,7,535-541.
MLA Wang, W. Z.,et al."A decagonal quasicrystal with rhombic and hexagonal tiles decorated with icosahedral structural units".IUCRJ 7(2020):535-541.
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