Novel hydrides in Li-TM systems synthesized by high pressure method (TM = Ti, Zr, Hf)

Riki Kataoka, Toyoto Sato, Takahiro Kuriiwa, Atsunori Kamegawa, Masuo Okada

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

New Li-based hydrides have been prepared under GPa-order by using a cubic-anvil-type apparatus. Novel compounds in Li-Zr and Li-Hf systems were obtained at 973 K under 5 GPa. For Li-Zr system, a novel compound has a primitive cubic structure with a = 0.42188(3) nm. The compound was thermally stable up to 723 K under Ar flow. For Li-Hf system, two novel compounds were successfully synthesized. Crystal structures of these compounds were found to be a primitive cubic (a = 0.4209(2) nm) and a body centered cubic (a = 1.08369(4) nm). A structural model of the new compounds with the body-centered cubic structure was found to be an Ag8Ca3-type structure. The novel compound with a primitive cubic structure was thermally stable up to 723 K, but the compound with the body centered cubic structure was decomposed at 600 K with an endothermic reaction.

Original languageEnglish
Pages (from-to)49-53
Number of pages5
JournalMaterials Transactions
Volume52
Issue number1
DOIs
Publication statusPublished - 2011 Jan

Keywords

  • High pressure synthesis
  • Li-Hf-H
  • Li-Ti-H
  • Li-Zr-H
  • Lithium
  • New hydride
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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