Neutron diffraction of amorphous Se-Te prepared by MA

K. Itoh; M. Misawa; T. Fukunaga

doi:10.2497/jjspm.48.806

Neutron diffraction of amorphous Se-Te prepared by MA

K. Itoh, M. Misawa, T. Fukunaga

Research output: Contribution to journal › Article › peer-review

Abstract

Amorphous Se_100-xTe_x 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 language	English
Pages (from-to)	806-809
Number of pages	4
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	48
Issue number	9
DOIs	https://doi.org/10.2497/jjspm.48.806
Publication status	Published - Sept 2001
Externally published	Yes

Keywords

Dangling bond
Mechanical alloying
Neutron diffraction
Short range structures

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.2497/jjspm.48.806

Cite this

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title = "Neutron diffraction of amorphous Se-Te prepared by MA",

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.",

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AU - Itoh, K.

AU - Misawa, M.

AU - Fukunaga, T.

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N2 - 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.

AB - 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.

KW - Dangling bond

KW - Mechanical alloying

KW - Neutron diffraction

KW - Short range structures

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Neutron diffraction of amorphous Se-Te prepared by MA

Abstract

Keywords

ASJC Scopus subject areas

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