Syntheses and properties of several metastable and stable hydrides derived from intermetallic compounds under high hydrogen pressure

S. M. Filipek, V. Paul-Boncour, R. S. Liu, I. Jacob, T. Tsutaoka, A. Budziak, A. Morawski, H. Sugiura, P. Zachariasz, K. Dybko, R. Diduszko

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Brief summary of our former work on high hydrogen pressure syntheses of novel hydrides and studies of their properties is supplemented with new results. Syntheses and properties of a number of hydrides (unstable, metastable or stable in ambient conditions) derived under high hydrogen pressure from intermetallic compounds, like MeT 2 , MeNi 5 , Me 7 T 3 , Y 6 Mn 23 and YMn 12 (where Me = zirconium, yttrium or rare earth; T = transition metal) are presented. Stabilization of ZrFe 2 H 4 due to surface phenomena was revealed. Unusual role of manganese in hydride forming processes is pointed out. Hydrogen induced phase transitions, suppression of magnetism, antiferromagnetic-ferromagnetic and metal-insulator or semimetal-metal transitions are described. Equations of state (EOS) of hydrides submitted to hydrostatic pressures up to 30 GPa are presented and discussed.

Original languageEnglish
Pages (from-to)723-730
Number of pages8
JournalApplied Surface Science
Volume388
DOIs
StatePublished - 1 Dec 2016

Keywords

  • High pressure
  • Hydrides
  • Hydrogen storage
  • Intermetallic alloys
  • Phase transitions
  • Surface phenomena

ASJC Scopus subject areas

  • Chemistry (all)
  • Condensed Matter Physics
  • Physics and Astronomy (all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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