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Local structure of Ge/Si nanostructures: Uniqueness of XAFS spectroscopy

  • A. V. Kolobov
  • , H. Oyanagi
  • , A. Frenkel
  • , I. Robinson
  • , J. Cross
  • , S. Wei
  • , K. Brunner
  • , G. Abstreiter
  • , Y. Maeda
  • , A. Shklyaev
  • , M. Ichikawa
  • , S. Yamasaki
  • , K. Tanaka
  • Joint Research Center for Atomic Technology (JRCAT)
  • Ioffe Physical-Technical Institute
  • National Institute of Advanced Industrial Science and Technology
  • University of Illinois at Urbana-Champaign
  • Argonne National Laboratory
  • University of Science and Technology of China
  • Technical University of Munich
  • Osaka Metropolitan University
  • Angstrom Technology Partnership

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The local structure of Ge/Si nanostructures was discussed using x-ray absorption fine structure (XAFS) spectroscopy. The samples were found to be grown by molecular beam epitaxy (MBE) on Si substrate at three different temperatures of 510, 550 and 745 °C. The analysis showed that the combined diffraction anomalous fine structure (DAFS)-EXAFS analysis allowed to separate the structural parameters of the intermixed nanocrystalline and amorphous phases.

Original languageEnglish
Pages (from-to)174-178
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume199
DOIs
StatePublished - Jan 2003

Keywords

  • DAFS
  • EXAFS
  • Ge nanostructures
  • Nanocrystals
  • Quantum dots
  • Raman scattering

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