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	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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