A new orthorhombic approximant of the ga-mn and ga-fe-cu-si decagonal quasicrystals consisting entirely of uniformly oriented 'crown' subunits | |
Wu, JS; Ge, SP; Kuo, KH | |
刊名 | Philosophical magazine a-physics of condensed matter structure defects and mechanical properties |
1999-08-01 | |
卷号 | 79期号:8页码:1787-1803 |
ISSN号 | 0141-8610 |
通讯作者 | Wu, js() |
英文摘要 | By means of high resolution electron microscopy (hrem), the orthorhombic (2/1, 1/1) approximant (a = 2.04 nm, b = 1.25 nm and c = 1.48 nm) of the decagonal quasicrystal in ga-mn and ga-fe-cu-si alloys was found to consist of a b-centred rectangular tessellation of the 'crown' or 'concave octagon' subunit, a binary tile composed of one thin and three fat penrose rhombi with an edge length of 0.66 nm. based on the atomic decoration of these penrose rhombi, a structural model of the crown subunit and that of the ga-mn (2/1, 1/1) approximant have been put forward. simulated electron diffraction patterns and hrem images compared favourably with the experimental results. various periodic tilings of the crown subunit, either alone or intermixed with other binary tiles (hexagon, 72 degrees pentagonal star and/or decagon) were discussed and compared with a number of approximants found experimentally by hrem. |
WOS关键词 | RESOLUTION ELECTRON-MICROSCOPY ; QUASI-CRYSTAL ; AL-PD ; STRUCTURAL MODELS ; PHASES ; ALLOYS ; ORDER |
WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
语种 | 英语 |
出版者 | TAYLOR & FRANCIS LTD |
WOS记录号 | WOS:000081831800003 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2373860 |
专题 | 物理研究所 |
通讯作者 | Wu, JS |
作者单位 | 1.Chinese Acad Sci, Inst Phys, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R China 2.Dalian Univ Technol, Dept Mat Engn, Dalian 116024, Peoples R China 3.Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, JS,Ge, SP,Kuo, KH. A new orthorhombic approximant of the ga-mn and ga-fe-cu-si decagonal quasicrystals consisting entirely of uniformly oriented 'crown' subunits[J]. Philosophical magazine a-physics of condensed matter structure defects and mechanical properties,1999,79(8):1787-1803. |
APA | Wu, JS,Ge, SP,&Kuo, KH.(1999).A new orthorhombic approximant of the ga-mn and ga-fe-cu-si decagonal quasicrystals consisting entirely of uniformly oriented 'crown' subunits.Philosophical magazine a-physics of condensed matter structure defects and mechanical properties,79(8),1787-1803. |
MLA | Wu, JS,et al."A new orthorhombic approximant of the ga-mn and ga-fe-cu-si decagonal quasicrystals consisting entirely of uniformly oriented 'crown' subunits".Philosophical magazine a-physics of condensed matter structure defects and mechanical properties 79.8(1999):1787-1803. |
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