Atomic structure of hydrogen storage amorphous alloys

T. Fukunaga, K. Itoh, K. Aoki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Neutron diffraction is a powerful tool to elucidate the structure of hydrogen storage materials. H/D isotopic substitution was employed to observe the location of deuterium atoms because the coherent scattering length of deuterium is large enough to observe in comparison with those of the other atoms forming hydride materials. The combination of X-ray and neutron diffraction made clear the location of deuterium atoms of the hydrogen induced amorphous alloys experimentally. Moreover, the RMC modeling based on the diffraction data indicates that about 93% of D atoms for a-(Ti0.676Zr 0.324)D0.31 and about 98% of D atoms for a-TbFe 2D3.8 and a-TbNi2D2.4 occupy tetrahedral sites formed by metal atoms. Interestingly, during the HJA process, whereas the concentration fluctuation develops in the structure of A-TbFe 2D3.0, the homogeneity of the atomic arrangement of metal atoms is kept for a-TbNi2D2.4.

Original languageEnglish
Title of host publicationNew Frontiers of Processing and Eng. in Advanced Materials - Proc. of the Int. Conf. on New Frontiers of Process Science and Eng. in Advanced Materials, PSEA' 04 - The 14th Iketani Conference
PublisherTrans Tech Publications Ltd
Pages257-262
Number of pages6
ISBN (Print)0878499806, 9780878499809
DOIs
Publication statusPublished - Jan 1 2005
Externally publishedYes
EventInternational Conference on New Frontiers of Process Science and Engineering in Advanced Materials, PSEA' 04 - Kyoto, Japan
Duration: Nov 24 2004Nov 26 2004

Publication series

NameMaterials Science Forum
Volume502
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

OtherInternational Conference on New Frontiers of Process Science and Engineering in Advanced Materials, PSEA' 04
CountryJapan
CityKyoto
Period11/24/0411/26/04

Keywords

  • Amorphous alloy
  • Hydrogen storage material
  • Neutron diffraction
  • Structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Fukunaga, T., Itoh, K., & Aoki, K. (2005). Atomic structure of hydrogen storage amorphous alloys. In New Frontiers of Processing and Eng. in Advanced Materials - Proc. of the Int. Conf. on New Frontiers of Process Science and Eng. in Advanced Materials, PSEA' 04 - The 14th Iketani Conference (pp. 257-262). (Materials Science Forum; Vol. 502). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-980-6.257