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	High-resolution electron microscopy observation of a new crystalline approximant w ' of mg-zn-y icosahedral quasicrystal
	Luo, ZP; Hashimoto, H
刊名	Micron
	2000-10-01
卷号	31期号:5页码:487-492
关键词	Crystal Electron diffraction High-resolution electron microscopy Mg-zn-y Quasicrystal
ISSN号	0968-4328
通讯作者	Luo, zp()
英文摘要	A new ordered structure w' with a lattice parameter (a = 2.05 nm) about three times as large as that of the fundamental face-centered cubic w phase (n = 0.6848 nm) has been found in the mg-zn-y system by means of transmission electron microscopy. the w' and w phases have the cube-to-cube orientation relationship. moreover, the strong electron diffraction spots of the w' phase showed pseudo-icosahedral symmetry, implying that it is a crystalline approximant of the mg-zn-y icosahedral quasicrystal. in the high-resolution electron microscopic images of the w' phase, penrose tiles of pentagons and boats with an edge length of a(p) = 0.481 nm can be identified. a binary tile of crown subunit has also been deduced from such a tiling. translation domains of the w' phase have also been observed and the translation vectors at the domain boundary are: a(p), tau x a(p) and (1 + tau) x a(p), respectively, where (1 + tau) x a(p) equals to the edge length a(l) of the big obtuse rhombus of the w' phase and tau = (1 + root 5)/2, is the golden ratio. (c) 2000 elsevier science ltd. all rights reserved.
WOS关键词	QUASI-CRYSTALS ; RE ALLOYS ; PHASE
WOS研究方向	Microscopy
WOS类目	Microscopy
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000087050100005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373890
专题	物理研究所
通讯作者	Luo, ZP
作者单位	1.Okayama Univ Sci, Okayama 700, Japan 2.Chinese Acad Sci, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R China 3.Inst Aeronaut Mat, Beijing 100095, Peoples R China
推荐引用方式 GB/T 7714	Luo, ZP,Hashimoto, H. High-resolution electron microscopy observation of a new crystalline approximant w ' of mg-zn-y icosahedral quasicrystal[J]. Micron,2000,31(5):487-492.
APA	Luo, ZP,&Hashimoto, H.(2000).High-resolution electron microscopy observation of a new crystalline approximant w ' of mg-zn-y icosahedral quasicrystal.Micron,31(5),487-492.
MLA	Luo, ZP,et al."High-resolution electron microscopy observation of a new crystalline approximant w ' of mg-zn-y icosahedral quasicrystal".Micron 31.5(2000):487-492.

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