2026-03-11T17:03:57Z https://it-hiroshima.repo.nii.ac.jp/oai

oai:it-hiroshima.repo.nii.ac.jp:00000818 2023-07-25T10:39:11Z 1:18:379

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 Construction of three-dimensional atomic images of functional materials by x-ray fluorescence holography 細川, 伸也 ホソカワ, シンヤ 尾崎, 徹 オザキ, トオル 八方, 直久 ハッポウ, ナオヒサ 林, 好一 ハヤシ, コウイチ Hosokawa, Shinya Ozaki, T?ru Happo, Naohisa Hayashi, Kouichi 427 Imaging Crystal structure Local environment Syuchrotron radiation application/pdf 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. 広島工業大学 2010-02 jpn departmental bulletin paper VoR https://it-hiroshima.repo.nii.ac.jp/records/818 AA11599110 13469975 広島工業大学紀要. 研究編 44 177 188 https://it-hiroshima.repo.nii.ac.jp/record/818/files/kiyo44177.pdf application/pdf 1.7 MB 2023-03-30