Temperature-dependent local atomic structures in the traditional Fe65Ni35 Invar alloy by X-ray fluorescence holography

Jens Rüdiger Stellhorn, Yuuki Ideguchi, Shinya Hosokawa, Naohisa Happo, Tomohiro Matsushita, Kunio Yubuta, Motohiro Suzuki, Hirofumi Ishii, Yen Fa Liao, Koji Kimura, Kouichi Hayashi

研究成果: ジャーナルへの寄稿学術誌査読

9 被引用数 (Scopus)

抄録

Fe and Ni Kα X-ray fluorescence holography measurements were conducted on a single crystal Fe65Ni35 Invar alloy at 100 and 300 K to investigate the temperature dependence of the 3-dimensional local structures around the Fe and Ni atoms, respectively. Local structural information was obtained by detailed analyses using a L1-regularized linear regression for the experimental data. At 100 K, the local atomic arrangements around both the elements show fcc structures. At 300 K, however, only the image around Fe shows a bcc-like neighboring arrangement. From these X-ray fluorescence holography data, we propose a model that with increasing temperature, an Fe atom with the low-spin state enters at the central position of the fcc lattice and is stabilized. And then, large angular positional fluctuations are induced for the atoms at the face-centered positions around the central Fe atom only.

本文言語英語
ページ(範囲)790-794
ページ数5
ジャーナルSurface and Interface Analysis
50
8
DOI
出版ステータス出版済み - 8月 2018
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 材料化学

フィンガープリント

「Temperature-dependent local atomic structures in the traditional Fe65Ni35 Invar alloy by X-ray fluorescence holography」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル