Crystal structure of the novel Mg3MnNi2D3−x interstitial deuteride

Denys, R.V.; Riabov, A.R.; Berezovets, V.V.; Koval'chuk, I.V.; Cerny, Radovan; Zavaliy, I.Yu

doi:10.1016/j.intermet.2011.05.032

Scientific article

English

Crystal structure of the novel Mg₃MnNi₂D_3−x interstitial deuteride

ContributorsDenys, R.V.; Riabov, A.R.; Berezovets, V.V.; Koval'chuk, I.V.; Cerny, Radovan; Zavaliy, I.Yu

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)

Affiliation entities

Faculté des sciences / Section de physique / Département de physique de la matière quantique

Research groups

Groupe Cerny

Citation (ISO format)

DENYS, R.V. et al. Crystal structure of the novel Mg₃MnNi₂D_3−x interstitial deuteride. In: Intermetallics, 2011, vol. 19, n° 10, p. 1563–1566. doi: 10.1016/j.intermet.2011.05.032

Article (Published version)

Identifiers

PID : unige:35165
DOI : 10.1016/j.intermet.2011.05.032

Additional URL for this publicationhttp://linkinghub.elsevier.com/retrieve/pii/S0966979511001919

Journal ISSN0966-9795

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Crystal structure of the novel Mg3MnNi2D3−x interstitial deuteride

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Crystal structure of the novel Mg₃MnNi₂D_3−x interstitial deuteride