Theoretical study of the metamagnetism in ThCo sub 5
- Condensed Matter Theory Group, Department of Physics, University of Uppsala, Box 530, Uppsala (Sweden)
- Center for Material Science, Los Alamos National Laboratory, Los Alamos, NM (USA)
- Commission of the European Communities, Institute for Transuranium Elements, Postfach 2340, D-7500 Karlsruhe (Federal Republic of Germany)
A theoretical study of the magnetic properties of the intermetallic compound ThCo{sub 5} has been performed by means of the fixed-spin-moment method. Metamagnetism is found in accordance with experimental observations, although only for slightly smaller volumes than the experimental equilibrium volume. It is found that for the lower magnetic state there are two distinctly different local cobalt magnetic moments, whereas for the higher magnetic state the two cobalt moments are nearly of the same size. These findings are discussed in terms of the calculated electronic structure. Appreciable orbital magnetic moments on the cobalt atoms are obtained when spin-orbit coupling is included in the calculations. The volume dependence of the theoretically calculated magnetic properties and its influence on the metamagnetic transition are discussed.
- OSTI ID:
- 6197207
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:13; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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