Structural studies of disordered Mg2NiH4 formed by mechanical grinding

Ewa Rönnebro, Jens Oluf Jensen, Dag Noréus, Niels Bjerrum

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

The low temperature phase of Mg2NiH4 was mechanically ground in argon atmosphere. The ordered monoclinic structure was destroyed to form the disordered cubic structure, previously only found above 510 K. With a Guinier-Hagg X-ray camera the cell parameter was determined to be a=6.492(3) Angstrom. By performing a Rietveld refinement on neutron diffraction data it was confirmed that the disordered structure is similar to the high temperature form of Mg2NiH4 (space group Fm3m). (C) 1999 Elsevier Science S.A. All rights reserved.
Original languageEnglish
JournalJournal of Alloys and Compounds
Volume293-295
Pages (from-to)146-149
ISSN0925-8388
DOIs
Publication statusPublished - 1999
Event6th International Symposium on Metal-Hydrogen Systems: Fundamentals and Applications - Hangzhou, China
Duration: 4 Oct 19989 Oct 1998
Conference number: 6

Conference

Conference6th International Symposium on Metal-Hydrogen Systems
Number6
CountryChina
CityHangzhou
Period04/10/199809/10/1998

Keywords

  • Disordered Mg2NiH4
  • Mechanical grinding
  • Structural study

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