A STRUCTURAL MODEL OF THE ICOSAHEDRAL AL6LI3CU PHASE STUDIED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY

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	A STRUCTURAL MODEL OF THE ICOSAHEDRAL AL6LI3CU PHASE STUDIED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY
	D. Shi; H. Q. Ye; Q. B. Yang; K. H. Kuo
	1991
发表期刊	Philosophical Magazine B-Physics of Condensed Matter Statistical Mechanics Electronic Optical and Magnetic Properties
ISSN	0141-8637
卷号	63 期号:6 页码:1365-1374
摘要	High-resolution electron microscopy (HREM) images along the main symmetry directions, such as the twofold, threefold and fivefold axes, in icosahedral Al6Li3Cu (T2) phase have been obtained in this work. It is suggested that Li atom columns parallel to the electron beam may form a channel for the electrons. We have proposed a new atomic decoration model for the T2 phase in order to explain the HREM photographs. It has been suggested that the basic structure unit is a double triacontahedron with an edge length of 0.505 nm and that the T2 phase should be composed of a three-dimensional Penrose tiling format using these units. The edge length of the rhombohedron in the tiling is 0.505-tau-3 (= 2.139) nm. Projections of the model have been compared with the HREM images and it is shown that the match between them is satisfactory.
部门归属	chinese acad sci,beijing lab electron microscopy,beijing 100080,peoples r china.;shi, d (reprint author), acad sinica,inst met res,atom imaging solids lab,shenyang 110015,peoples r china
关键词	Cu (Al Quasicrystals Zn)49mg32 Diffraction Symmetry System Alloy Li
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/39437
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. Shi,H. Q. Ye,Q. B. Yang,et al. A STRUCTURAL MODEL OF THE ICOSAHEDRAL AL6LI3CU PHASE STUDIED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY[J]. Philosophical Magazine B-Physics of Condensed Matter Statistical Mechanics Electronic Optical and Magnetic Properties,1991,63(6):1365-1374.
APA	D. Shi,H. Q. Ye,Q. B. Yang,&K. H. Kuo.(1991).A STRUCTURAL MODEL OF THE ICOSAHEDRAL AL6LI3CU PHASE STUDIED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY.Philosophical Magazine B-Physics of Condensed Matter Statistical Mechanics Electronic Optical and Magnetic Properties,63(6),1365-1374.
MLA	D. Shi,et al."A STRUCTURAL MODEL OF THE ICOSAHEDRAL AL6LI3CU PHASE STUDIED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY".Philosophical Magazine B-Physics of Condensed Matter Statistical Mechanics Electronic Optical and Magnetic Properties 63.6(1991):1365-1374.