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Crystal structure of k-Hf9Mo4SiD16.8 deuteride

Koval'chuck, I. V.
Denys, R. V.
Zavality, I. Yu.
Published in Chemistry of Metals and Alloys. 2008, vol. 1, p. 180-184
Abstract The k-Hf9Mo4SiD16.8 deuteride was prepared by deuteration of the intermetallic alloy at room temperature and 0.1 MPa D2 pressure. Synchrotron X-ray and neutron powder diffraction studies revealed that the initial crystal structure is preserved upon deuterium absorption (sp.gr. P63/mmc, a = 8.9553(1) Å, c = 9.0947(2), ∆a/a = 4.0%; ∆c/c = 5.5%; ∆V/V = 14.1%; ∆V/at.D = 2.33 Å3). Deuterium atoms occupy four interstitial positions: two tetrahedral Hf2Mo2 and Hf3Si sites and two triangular Hf3 sites.
Keywords Hafnium alloysHydridesCrystal structureX-ray and neutron diffraction analysis
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KOVAL'CHUCK, I. V. et al. Crystal structure of k-Hf9Mo4SiD16.8 deuteride. In: Chemistry of Metals and Alloys, 2008, vol. 1, p. 180-184. https://archive-ouverte.unige.ch/unige:35422

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Deposited on : 2014-04-08

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