Neutron diffraction of amorphous Se-Te prepared by MA

Keiji Itoh, M. Misawa, T. Fukunaga

Research output: Contribution to journalArticle

Abstract

Amorphous Se100-xTex powders (x = 0, 5, 10, 15 and 20) have been produced by mechanical alloying (MA). The time-of-flight neutron scattering measurement was employed in order to elucidate the short range structures for these powders. Well-resolved first peak in radial distribution functions can be decomposed into two Gaussian peaks, which correspond to the Se-Se and Se-Te correlations. The coordination number teaches us that amorphous Se has a lot of dangling bonds due to broken of Se-Se bond by milling. However, the compositional changes of the coordination numbers of Se-Se and Se-Te pairs for Se-Te powders imply that Te atoms are bonded to the edge of Se chain molecules and the twofold chain structure is built up with increasing Te content.

Original languageEnglish
Pages (from-to)806-809
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume48
Issue number9
Publication statusPublished - Sep 2001
Externally publishedYes

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Keywords

  • Dangling bond
  • Mechanical alloying
  • Neutron diffraction
  • Short range structures

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

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