Ho arrangement in the Zn6Mg3Ho icosahedral quasicrystal studied by atomic-resolution Z-contrast STEM.

Abe E; Takakura H; Tsai AP

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Ho arrangement in the Zn6Mg3Ho icosahedral quasicrystal studied by atomic-resolution Z-contrast STEM.

机译：通过原子分辨率Z-对比度杆研究的Zn6MG3HO icosaheDral拟替代的安排。

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The atomic structure of the Zn6Mg3Ho icosahedral quasicrystal has been studied by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) with Z-contrast (Z: atomic number). We demonstrate that in particular Z-contrast imaging is quite powerful for specifying heavy atom positions in the quasicrystalline compound, as shown by a comparison with high-resolution phase-contrast imaging. It is confirmed that the observed Z-contrast images are fairly well explained by the projected potential of only the Ho atomic arrangement, which was recently proposed by X-ray diffraction analysis; Ho occupies an even-body-center site of the 3-dimensional Penrose lattice. Consequently, the present direct structural observation strongly supports the validity of the proposed Ho site.

机译：通过具有Z-对比度（Z：原子数）的大角度环形暗场扫描透射电子显微镜（HAADF-茎）研究了Zn6MG3HO ICOSAHEDRAL拟替代的原子结构。我们证明，特别是Z-对比度成像非常强大，用于在拟晶化合物中指定重型原子位置，如与高分辨率相位对比度成像的比较所示。确认观察到的Z-对比度图像通过X射线衍射分析最近提出的HO原子排列的预计电位非常好地解释; Ho占据三维Penrose格的均匀体中心部位。因此，目前的直接结构观察强烈支持所提出的HO位点的有效性。

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来源
《Journal of Electron Microscopy》 |2001年第3期|共9页
作者
Abe E; Takakura H; Tsai AP;
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作者单位

National Institute for Materials Science Tsukuba Japan. abe.eiji@nims.go.jp;

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原文格式 PDF
正文语种 eng
中图分类临床医学;
关键词
Atom; Scanning/Transmission Electron Microscopes; Diagnostic Imaging; Patient observation; 诊断显像;

机译：原子;扫描/透射电子显微镜;诊断成像;患者观察;诊断诊断;

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专利

1. Ho arrangement in the Zn6Mg3Ho icosahedral quasicrystal studied by atomic-resolution Z-contrast STEM. [J] . Abe E, Takakura H, Tsai AP Journal of Electron Microscopy . 2001,第3期

机译：通过原子分辨率Z-对比度杆研究的Zn6MG3HO icosaheDral拟替代的安排。
2. Structure of a crystalline approximant related to Al-Co-Ni decagonal quasicrystals studied by spherical aberration (Cs)-corrected scanning transmission electron microscopy and atomic-resolution energy dispersive X-ray spectroscopy [J] . Akira Yasuhara, Kunio Yubuta, Kenji Hiraga Philosophical Magazine Letters . 2014,第7a9期

机译：通过球差（Cs）校正的扫描透射电子显微镜和原子分辨率的能量色散X射线光谱研究了与Al-Co-Ni十边形准晶体有关的晶体近似物的结构
3. Three-dimensional reconstruction of the atomic arrangement of icosahedral quasicrystals by binary discrete tomography [J] . Y.IshibashiaH.SugiuraaK.Saitohb*N.Tanakab Philosophical Magazine . 2011,第19a21期

机译：二十面体准晶体原子排列的二维离散层析成像三维重建
4. Microstructure of a High-strength Nanocrystalline Mg-1at.Zn-2at.Y Alloy Studied by Atomic-resolution Z-contrast STEM [C] . Eiji Abe, Y. Kawamura, A. Inoue Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003 Pt.2, Jan 26-30, 2003, Osaka, Japan . 2003

机译：原子分辨Z-对比度STEM研究高强度纳米Mg-1at。％Zn-2at.Y合金的微观结构
5. Structure and phase transformation studies of the icosahedral quasicrystal and related icosahedrally coordinated phases in titanium-zirconium-nickel alloys [D] . Stroud, Rhonda Michele 1996

机译：钛 - 锆 - 镍合金中ICOSAHEDRAL拟替替替替替替替替替替氏型和相关甲素育相协调阶段的结构与相变研究
6. Icosahedral quasicrystals of intermetallic compounds are icosahedral twins of cubic crystals of three kinds consisting of large (about 5000 atoms) icosahedral complexes in either a cubic body-centered or a cubic face-centered arrangement or smaller (about 1350 atoms) icosahedral complexes in the β-tungsten arrangement [O] . Linus Pauling 1989

机译：金属间化合物的二十面体准晶体是三种立方晶体的二十面体孪晶由大（约5000原子）的二十面体配合物（以立方体心或立方面心排列）或更小（约1350原子）的二十面体配合物组成。 β钨排列
7. Arrangement of Mn and Pd Atoms of an Al-Pd-Mn Decagonal Quasicrystal by Atomic-resolution Energy-dispersive X-ray Spectroscopy [O] . Akira Yasuhara, Kenji Hiraga 2016

机译：通过原子分辨率能量分散X射线光谱法的Mn和Pd原子的布置和Pd原子

Ho arrangement in the Zn6Mg3Ho icosahedral quasicrystal studied by atomic-resolution Z-contrast STEM.

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