Local structures and hydrogen dynamics in amorphous and nanostructured Mg-Ni-H systems as studied by 1H and 2H nuclear magnetic resonance

Shigenobu Hayashi, Shin Ichi Orimo, Hironobu Fujii

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

1H and 2H NMR spectra have been measured for amorphous MgNi-H(D) and nanostructured Mg2Ni-D systems synthesized by reactive mechanical grinding. 1H MAS NMR spectra indicate that the dominant phase in the amorphous MgNi-H system is an amorphous MgNi-H phase and that a small amount of an amorphous/disordered α-MgHx phase is contained. Hydrogens are randomly distributed in the amorphous MgNi-H phase. 2H NMR spectra demonstrate that hydrogen motion is faster in the order of the nanostructured Mg2Ni-H, the crystalline Mg2NiH4 and the amorphous MgNi-H systems.

Original languageEnglish
Pages (from-to)145-149
Number of pages5
JournalJournal of Alloys and Compounds
Volume261
Issue number1-2
DOIs
Publication statusPublished - 1997 Sep 26
Externally publishedYes

Keywords

  • Magnesium nickel hydride
  • Reactive mechanical grinding
  • Solid-state NMR

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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