Structure refinement of the icosahedral AlPdMn quasicrystal using quantitative convergent beam electron diffraction and symmetry-adapted parameters

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	Structure refinement of the icosahedral AlPdMn quasicrystal using quantitative convergent beam electron diffraction and symmetry-adapted parameters
	Fang, AH ; Zou, HM ; Yu, FM ; Wang, RH ; Duan, XF
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2003
卷号	15 期号:29 页码:4947
关键词	SELECTION CLUSTERS PHASE
ISSN号	0953-8984
通讯作者	Zou, HM (reprint author), Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China.
中文摘要	The atomic structure of the perfect AlPdMn icosahedral phase has been studied on a single-crystal specimen using the quantitative convergent beam electron diffraction (QCBED) technique combined with a description of the shapes of atomic surfaces using a symmetry-adapted series of surface harmonics. The spherical model (Boudard et al 1992 J. Phys.: Condens. Matter 4 10149) was used as a starting point for the refinement. By fitting the calculated electron diffraction intensities in the CBED line profile to the experimental electron diffraction intensities, the coefficients in the surface harmonic expansion of the atomic surfaces' boundaries are refined. The refined parameters show that the fluctuations of the external boundary of atomic surface for Pd at n(0) can be as large as 0.2 nm. The boundaries of the atomic surfaces for Mn show little fluctuation. Compared to the spherical model, in the present model the number of unphysically short interatomic distances is reduced significantly. The three-dimensional atomic clusters with centres located successively at the six-dimensional lattice nodes n(0), n(1) and bc(1) are generated by means of the cut method.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/53605]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Fang, AH,Zou, HM,Yu, FM,et al. Structure refinement of the icosahedral AlPdMn quasicrystal using quantitative convergent beam electron diffraction and symmetry-adapted parameters[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2003,15(29):4947.
APA	Fang, AH,Zou, HM,Yu, FM,Wang, RH,&Duan, XF.(2003).Structure refinement of the icosahedral AlPdMn quasicrystal using quantitative convergent beam electron diffraction and symmetry-adapted parameters.JOURNAL OF PHYSICS-CONDENSED MATTER,15(29),4947.
MLA	Fang, AH,et al."Structure refinement of the icosahedral AlPdMn quasicrystal using quantitative convergent beam electron diffraction and symmetry-adapted parameters".JOURNAL OF PHYSICS-CONDENSED MATTER 15.29(2003):4947.