Abstract
The effects of the hydrogen and the nitrogen on the magnetocrystalline anisotropy (MCA) and magnetostriction of R 2Fe 17M (R=Y, Tb, Dy, Ho, Er; M=H, N) compounds are studied. The signs of the first MCA constants of a rare-earth (R) sublattice are in agreement with the sign of the Stevens factors of R ions for all R 2Fe 17M compounds studied. The effects of the nitrogen and the hydrogen atoms on rare-earth sublattice anisotropy have been found to be opposite. Both hydrogenation and nitrogenation lead to the reduction and change in the signs of the magnetostriction.
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