Reconciling the Pauling bond length picture and Vegard's law in a mixed crystal: An x-ray fluorescence holographic study

Shinya Hosokawa, Naohisa Happo, Kouichi Hayashi

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

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 Zn0.4 Mn0.6 Te single crystal for drawing a three-dimensional atomic image around the Zn atom. The XFH image intensities of Te atoms in Zn0.4 Mn0.6 Te 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.

Original languageEnglish
Article number134123
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number13
DOIs
Publication statusPublished - 2009 Oct 26

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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