蛍光X 線ホログラフィーによる機能性物質の三次元原子配列イメージの構築

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/8097
File
Title
蛍光X 線ホログラフィーによる機能性物質の三次元原子配列イメージの構築
Title Alternative
Construction of three-dimensional atomic images of functional materials by x-ray fluorescence holography
Author
氏名 細川 伸也
ヨミ ホソカワ シンヤ
別名 Hosokawa Shinya
氏名 尾崎 徹
ヨミ オザキ トオル
別名 Ozaki T?ru
氏名 八方 直久
ヨミ ハッポウ ナオヒサ
別名 Happo Naohisa
氏名 林 好一
ヨミ ハヤシ コウイチ
別名 Hayashi Kouichi
Subject
Imaging
Crystal structure
Local environment
Syuchrotron radiation
NDC
427
Abstract

In order to bridge experimental results for the atomic structure in mixed crystals between x-ray diffraction showing a Vegard’s law and x-ray absorption fine structure spectroscopy indicating preservations of each Pauling’s bond length, an x-ray fluorescence holography (XFH) experiment was carried out on Zn_0.4Mn_0.6Te single crystal for drawing a three-dimensional atomic image around the Zn atom. The XFH image intensities of Te atoms in Zn_0.4Mn_0.6Te with respect to the reference ZnTe are almost constant beyond the five chemical bonds from the central Zn atom, while the nearer Te atomic images are much weaker, indicating that the Pauling’s bond length interconnects with Vegard’s law at about five chemical bonds. The randomness of the atomic positions is well explained by a locomotive wheel atomic configuration model. The feasibility of the XFH technique is also described by reviewing results on other functional materials, such as a mixed crystal In_<1-x>Ga_xSb, a DVD meterial Ge_2Sb_2Te_5, and a shape memorial alloy Ti_<50>Ni_<44>Fe_6.

Journal Title
広島工業大学紀要. 研究編
Volume
44
Spage
177
Epage
188
Published Date
2010-02
Publisher
広島工業大学
ISSN
1346-9975
NCID
AA11599110
Language
jpn
NIIType
Departmental Bulletin Paper
Text Version
出版社版
Old URI
Set
it-hiroshima