Structure of amorphous LaNi5D3.3 studied by neutron and X-ray diffraction

Keiji Itoh, T. Shoumura, K. Mori, M. Sugiyama, T. Fukunaga

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In situ neutron and X-ray diffraction measurements in a D2 gas atmosphere at a constant pressure of 1 MPa were performed on amorphous LaNi5D3.3, which was prepared by mechanical alloying in a D2 gas atmosphere. Reverse Monte Carlo (RMC) simulation based on the neutron and X-ray diffraction data was applied to construct a three-dimensional atomic arrangement of this amorphous alloy. The RMC model shows that more than 90% of the deuterium atoms occupy tetrahedral sites consisting of La and/or Ni atoms. Furthermore, the local environments around the Ni and La atoms were investigated by Voronoi polyhedral analysis of the RMC configuration of the metal atoms. The results show the presence of a number of prismatic-like polyhedra around a Ni atom.

Original languageEnglish
Pages (from-to)1975-1978
Number of pages4
JournalJournal of Non-Crystalline Solids
Volume353
Issue number18-21
DOIs
Publication statusPublished - Jun 15 2007
Externally publishedYes

Fingerprint

Neutrons
neutrons
X ray diffraction
Atoms
diffraction
atoms
x rays
Gases
atmospheres
Deuterium
Mechanical alloying
Amorphous alloys
polyhedrons
gases
alloying
deuterium
Metals
configurations
metals
simulation

Keywords

  • Amorphous metals, metallic glasses
  • Mechanical alloying
  • Neutron diffraction/scattering
  • Structure
  • X-ray diffraction

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Structure of amorphous LaNi5D3.3 studied by neutron and X-ray diffraction. / Itoh, Keiji; Shoumura, T.; Mori, K.; Sugiyama, M.; Fukunaga, T.

In: Journal of Non-Crystalline Solids, Vol. 353, No. 18-21, 15.06.2007, p. 1975-1978.

Research output: Contribution to journalArticle

Itoh, Keiji ; Shoumura, T. ; Mori, K. ; Sugiyama, M. ; Fukunaga, T. / Structure of amorphous LaNi5D3.3 studied by neutron and X-ray diffraction. In: Journal of Non-Crystalline Solids. 2007 ; Vol. 353, No. 18-21. pp. 1975-1978.
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AB - In situ neutron and X-ray diffraction measurements in a D2 gas atmosphere at a constant pressure of 1 MPa were performed on amorphous LaNi5D3.3, which was prepared by mechanical alloying in a D2 gas atmosphere. Reverse Monte Carlo (RMC) simulation based on the neutron and X-ray diffraction data was applied to construct a three-dimensional atomic arrangement of this amorphous alloy. The RMC model shows that more than 90% of the deuterium atoms occupy tetrahedral sites consisting of La and/or Ni atoms. Furthermore, the local environments around the Ni and La atoms were investigated by Voronoi polyhedral analysis of the RMC configuration of the metal atoms. The results show the presence of a number of prismatic-like polyhedra around a Ni atom.

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