Abstract
A theoretical study of the magnetic properties of the intermetallic compound 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.
- Received 15 May 1990
DOI:https://doi.org/10.1103/PhysRevB.42.8367
©1990 American Physical Society