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Atomic structure of an Al–Co–Ni decagonal quasicrystalline surface
http://hdl.handle.net/2237/7119
http://hdl.handle.net/2237/7119796d405b-05b0-4679-8e33-a85c7251e2ee
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2006-11-29 | |||||
タイトル | ||||||
タイトル | Atomic structure of an Al–Co–Ni decagonal quasicrystalline surface | |||||
言語 | en | |||||
著者 |
Yuhara, J.
× Yuhara, J.× Klikovits, J.× Schmid, M.× Varga, P.× Yokoyama, Y.× Shishido, T.× Soda, K. |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | Copyright: American Physical Society, All rights reserved. | |||||
抄録 | ||||||
内容記述 | We have analyzed the structure and composition of the first layer of an Al_72Co_16Ni_12 tenfold surface by means of scanning tunneling microscopy (STM), ion scattering spectroscopy (ISS), and Auger electron spectroscopy (AES). High-resolution STM images reveal local structures that have decagonal symmetry in addition to the usual pentagonal symmetry of the surface. This quasicrystal surface resembles a random tiling instead of an ideal quasiperiodic tiling. After annealing at 1100 K, the total surface atomic density found by ISS is (9±1d)*10^14 cm^{−2}. The surface densities of Al and TM (transition metal, i.e., Co and Ni) are determined as (8±1)*10^14 cm^{−2} and (1.0±0.2)*10^14 cm{−2}, respectively from ISS, indicating a similar density of Al and much lower density of the TM atoms in the surface layer than in a truncated bulk. The Al surface atomic density agrees well with the number of corrugation maxima in the STM images. A model of the arrangement of the Al atoms in the top layer is presented. Scanning unneling spectroscopy (STS) is performed to study the local electronic structure. The STS spectrum at the corrugation maxima is similar to that at the corrugation minima. A few ≃0.12 nm high protrusions in the STM images are attributed to local oxide clusters due to their STS spectra different from the corrugation ma ima and through in situ STM observations during exposure to O_2 gas at 2*10^{−6} Pa at RT. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | The American Physical Society | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevB.70.024203 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 1098-0121 | |||||
書誌情報 |
en : Physical Review B 巻 70, 号 2, p. 024203-024203, 発行日 2004-07-01 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/7119 | |||||
識別子タイプ | HDL |