Theoretical study of the metamagnetism in ThCo5

Lars Nordström, Börje Johansson, Olle Eriksson, and M. S. S. Brooks
Phys. Rev. B 42, 8367 – Published 1 November 1990
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Abstract

A theoretical study of the magnetic properties of the intermetallic compound ThCo5 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

Authors & Affiliations

Lars Nordström and Börje Johansson

  • Condensed Matter Theory Group, Department of Physics, University of Uppsala, Box 530, S-752 21 Uppsala, Sweden

Olle Eriksson

  • Center for Material Science, Los Alamos National Laboratory, Los Alamos, New Mexico 87544

M. S. S. Brooks

  • Commission of the European Communities, Institute for Transuranium Elements, Postfach 2340, D-7500 Karlsruhe, Federal Republic of Germany

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Issue

Vol. 42, Iss. 13 — 1 November 1990

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