electron microscopy;
surface structure;
morphology;
roughness;
and topography;
silicon;
palladium;
clusters;
D O I:
10.1016/S0039-6028(03)00204-8
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Pd clusters on a Pd deposited Si(I 11) surface were observed by ultrahigh vacuum high-resolution transmission electron microscopy. Both the Pd adsorbed I x I surface layer and Pd clusters on it were visualized on the condition of an illumination beam convergence of about 3 mrad, over-focus of about -10 nm and specimen thickness less than 30 nm. Structure models for the clusters were examined so that images simulated using their models show agreement with the observed ones. It was found that the Pd trimer model, each Pd atom of which sites at the on-top of Pd atoms in the I x I surface layer, are consistent with the experimental results. (C) 2003 Elsevier Science B.V. All rights reserved.
机构:
Tokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, JapanTokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, Japan
Oshima, Y
Nakade, H
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机构:
Tokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, JapanTokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, Japan
Nakade, H
Shigeki, S
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机构:
Tokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, JapanTokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, Japan
Shigeki, S
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机构:
Hirayama, H
Takayanagi, K
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机构:
Tokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, JapanTokyo Inst Technol, Grad Sch Nagatsuta, Midori Ku, Yokohama, Kanagawa 2268502, Japan
机构:
Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R ChinaHong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
Man, K. L.
Pang, A. B.
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Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R ChinaHong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
Pang, A. B.
Altman, M. S.
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机构:
Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R ChinaHong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
机构:
Japan Atom Energy Agcy, Quantum Beam Sci Ctr, Tokai, Ibaraki 3191195, Japan
Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, JapanJapan Atom Energy Agcy, Quantum Beam Sci Ctr, Tokai, Ibaraki 3191195, Japan
Asaoka, Hidehito
Uozumi, Yuki
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机构:
Japan Atom Energy Agcy, Quantum Beam Sci Ctr, Tokai, Ibaraki 3191195, Japan
Hitachi Power Solut Co Ltd, Hitachinaka, Ibaraki 3198507, JapanJapan Atom Energy Agcy, Quantum Beam Sci Ctr, Tokai, Ibaraki 3191195, Japan