Microstructure of hydrogenated Mg2Ni studied by SANS

K. Mori, M. Sugiyama, K. Iwase, S. Kawabe, Y. Onodera, K. Itoh, T. Otomo, T. Fukunaga

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Abstract

X-ray powder diffraction (XRD) and small-angle neutron scattering (SANS) experiments were carried out for the hydrogenated and duterated Mg 2Ni, respectively. According to the results of XRD experiments, both of them coexisted with unhydrogenated (or undeuterated) Mg2Ni in the hydrogen absorbing cycle. Furthermore, in the SANS experiments, a slope of SANS curve, I(Q), was roughly evaluated by using the following power law: I(Q) Q -m, where Q is the magnitude of the scattering vector, and m can be equated with a fractal dimensionality, DS (= 6 - m). In conclusion, the hydrogenated and duterated Mg2Ni showed DS∼ 3 and ∼ 2, respectively. The significant difference between DS's can be understood by considering the scattering length densities, ρ, of Mg 2Ni, Mg2NiH4, and Mg2NiD 4.

Original languageEnglish
Article number012036
JournalJournal of Physics: Conference Series
Volume247
DOIs
Publication statusPublished - Jan 1 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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