Intrinsically weak magnetic anisotropy of cerium in potential hard-magnetic intermetallics

New publication

2021/01/12

n Semih — Fig. The representation of the magnitude of the Ce magnetic moment in this quasi-atomic picture with and without Kondo screening.

A. Galler, S. Ener, F. Maccari, I. Dirba, K. P. Skokov, O. Gutfleisch, S. Biermann and L. V. Pourovskii

npj Quantum Materials 6, 2 (2021)

Ce-based intermetallics are interesting for hard magnetic compounds; utilizing rare-earth balanced material systems could help to mitigate shortcomings in the supply of rare earth resources due to the monopolistic market and growing demands. For various Ce intermetallics like CeFe2, RE2Fe14B and RECo5 a heavy-fermion behavior is reported where the Ce local magnetic moment is screened by conduction electrons. In our recent work in cooperation with the École Polytechnique, we focus on the CeFe11Ti system and investigate the Kondo effect on the magnetic properties of ternary CeFe11Ti and nitrogenated (CeFe11TiNx) samples. An ab initio approach to the magnetocrystalline anisotropy of Ce-based intermetallics nitrogen shows that interstitials suppress effectively the Ce-4f contribution to the magnetic anisotropy.

DOI: 10.1038/s41535-020-00301-6