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Scientific article
English

Crystal structure of the novel Mg3MnNi2D3−x interstitial deuteride

Published inIntermetallics, vol. 19, no. 10, p. 1563-1566
Publication date2011
Abstract

A novel low-temperature hydride, Mg3MnNi2D3−x with filled Ti2Ni-type structure has been synthesised and its crystal structure has been studied in detail by powder neutron diffraction. Refinement of the structures of β-Mg3MnNi2D1.83 and α-Mg3MnNi2D0.23 deuteride phases showed that D atoms partially fill 16d Mg6 octahedral and 32e Mg3Ni tetrahedral interstices in the cubic metal matrix (sp.gr. View the MathML sourceFd3¯m). The β-hydride was found to be rather unstable, during storage in air it transforms into α-hydride.

Keywords
  • Ternary alloy systems
  • Crystal chemistry of intermetallics
  • Hydrogen storage
  • Mechanical alloying and milling
  • Diffraction (neutron and X-ray)
Research group
Citation (ISO format)
DENYS, R.V. et al. Crystal structure of the novel Mg<sub>3</sub>MnNi<sub>2</sub>D<sub>3−x</sub> interstitial deuteride. In: Intermetallics, 2011, vol. 19, n° 10, p. 1563–1566. doi: 10.1016/j.intermet.2011.05.032
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Article (Published version)
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ISSN of the journal0966-9795
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