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Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides

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

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.

OriginalsprogEngelsk
TidsskriftJournal of Applied Physics
Vol/bind87
Udgave nummer9 III
Sider (fra-til)6815-6817
Antal sider3
ISSN0021-8979
DOI
StatusUdgivet - 1 maj 2000
Eksternt udgivetJa

ID: 218269564