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Denys R.V.,Physico Mechanical Institute NAS Ukraine | Riabov A.R.,Physico Mechanical Institute NAS Ukraine | Berezovets V.V.,Physico Mechanical Institute NAS Ukraine | Koval'Chuk I.V.,Physico Mechanical Institute NAS Ukraine | And 2 more authors.

A novel low-temperature hydride, Mg3MnNi2D 3-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-Mg3MnNi 2D1.83 and α-Mg3MnNi2D 0.23 deuteride phases showed that D atoms partially fill 16d Mg 6 octahedral and 32e Mg3Ni tetrahedral interstices in the cubic metal matrix (sp.gr. Fd3m). The β-hydride was found to be rather unstable, during storage in air it transforms into α-hydride. © 2011 Elsevier Ltd. All rights reserved. Source

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