High-pressure hydrides of iron and its alloys

V. E. Antonov, M. Baier, B. Dorner, V. K. Fedotov, G. Grosse, A. I. Kolesnikov, E. G. Ponyatovsky, G. Schneider, F. E. Wagner

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Hydrides of iron and iron-based alloys are thermodynamically stable only at hydrogen pressures in the gigapascal range and rapidly lose hydrogen under ambient conditions. At low temperatures, however, these hydrides can be retained in a metastable state at atmospheric pressure after being cooled under high pressure to liquid nitrogen temperature. This review will discuss the current state of studies on phase transformations in the Fe-H and related systems and also on the composition, crystal structure and physical properties of the hydrides, both under high hydrogen pressures and in the 'quenched' metastable state at ambient pressure. The studies at ambient pressure include magnetization measurements, x-ray and neutron diffraction, Mössbauer spectroscopy and inelastic neutron scattering. In the sections on Mössbauer and structural investigations of hydrides of Fe-Cr and Ni-Fe alloys new experimental results will be presented.

Original languageEnglish
Article number311
Pages (from-to)6427-6445
Number of pages19
JournalJournal of Physics Condensed Matter
Volume14
Issue number25
DOIs
StatePublished - Jul 1 2002
Externally publishedYes

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