Changes in magnetic properties of C15 Laves compound RCo2 due to hydrogenation

X. G. Li, A. Chiba, S. Takahashi, K. Aoki, T. Masumoto

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11 Citations (Scopus)

Abstract

Crystalline and amorphous hydrides were prepared by hydrogenation of the C15 Laves compounds RCo2 (R = rare earth elements). Magnetic properties of these two kinds of hydrides are investigated by a vibrating sample magnetometer from 4.2 K to 300 K in comparison with those of the original RCo2. Hydrogenation of RCo2 in the crystalline state induces a decline in the Curie temperature and a variation in saturation magnetization, but does not change their magnetic ground state since the crystalline structure is not changed. However, the magnetic state in amorphous hydrides of RCo2 change from the original Q type of ferrimagnetism into the N type of ferrimagnetism besides the change in the Curie temperature and the saturation magnetization.

Original languageEnglish
Pages (from-to)207-211
Number of pages5
JournalIntermetallics
Volume7
Issue number2
DOIs
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Hydrogen storage
  • Intermetallics
  • Laves phase
  • Magnetism
  • Miscellaneous

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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