Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides

A. V. Kolomiets, L. Havela, D. Rafaja, H. N. Bordallo, H. Nakotte, V. A. Yartys, B. C. Hauback, H. Drulis, W. Iwasieczko, L. E. DeLong

Research output: Contribution to journalConference articlepeer-review

23 Scopus citations

Abstract

The effect of hydrogenation on the magnetic properties and crystal structure of 4f and 5f intermetallics was studied on HoNiAlH2.0, UNiAlH2.3 and UNiAlD2.1. The incorporation of hydrogen into HoNiAl leads to a decrease of the magnetic ordering temperature from 13 to 6 K, while it increases from 19 K to values in the range 90-100 K in the UNiAl-H system. The crystal lattices of all compounds are anisotropically expanded. Moreover, the crystal symmetry is lowered to orthorhombic in HoNiAlH2.0, but remains hexagonal for UNiAlH(D)x. Three different deuterium positions were found for both compounds.

Original languageEnglish
Pages (from-to)6815-6817
Number of pages3
JournalJournal of Applied Physics
Volume87
Issue number9 III
DOIs
StatePublished - May 1 2000
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: Nov 15 1999Nov 18 1999

ASJC Scopus subject areas

  • General Physics and Astronomy

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