偏光全反射蛍光EXAFSによる金属単原子の三次元吸着構造解析

小池 祐一郎; 居島 薫; 芦間 英典; 藤川 敬介; 鈴木 秀士; 野村 昌治; 岩澤 康裕; 田 旺帝; 朝倉 清高

doi:10.1380/jsssj.27.414

Originals

The Adsorption Site and Structure of Metal Atoms on Oxide Single Crystals

Yuichiro KOIKE, Kaoru IJIMA, Hidenori ASHIMA, Keisuke FUJIKAWA, Sushi SUZUKI, Masaharu NOMURA, Yasuhiro IWASAWA, Wang-Jae CHUN, Kiyotaka ASAKURA

Author information

Yuichiro KOIKE
Catalysis Research Center, Hokkaido University
Graduate School of Engineering, Hokkaido University
Institute of Materials Structure Science, High Energy Accelerator Research Organization
Kaoru IJIMA
Department of Electrical Engineering, Yamanashi University
Hidenori ASHIMA
Catalysis Research Center, Hokkaido University
CREST-JST
Keisuke FUJIKAWA
Catalysis Research Center, Hokkaido University
Graduate School of Engineering, Hokkaido University
Sushi SUZUKI
Catalysis Research Center, Hokkaido University
CREST-JST
Masaharu NOMURA
Institute of Materials Structure Science, High Energy Accelerator Research Organization
Yasuhiro IWASAWA
Graduate School of Science, The University of Tokyo
Wang-Jae CHUN
Catalysis Research Center, Hokkaido University
CREST-JST
Kiyotaka ASAKURA
Catalysis Research Center, Hokkaido University

JOURNAL FREE ACCESS

2006 Volume 27 Issue 7 Pages 414-419

DOI https://doi.org/10.1380/jsssj.27.414

Details

Abstract

We developed a UHV-Polarization dependent Total-Reflection Fluorescence Extended X-ray Absorption Fine Structure System (UHV-PTRF-EXAFS System), which enables us to prepare a clean and well-defined oxide single crystal surface. We have determined the adsorption sites and structures of highly dispersed Ni atoms on α-Al₂O₃(0001) and TiO₂(110) using the system. In both cases, Ni atoms adsorbed at imaginary cation sites, where metal cations in next layer should be located. These results have indicated that Ni atoms selectively interact with oxygen dangling bonds.

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