Abstract
A systematic investigation of the magnetic properties of Y 2Fe 14-xMe xB ( Me = Co, Ni, Mn, Cr) has been carried out. All the substitutions performed result in an increase of the anisotropy field at a low concentration of the Me element. On the other hand, a decrease of both cell volume (V c) and saturation magnetization ( G ) (except for low Co content) is observed. The decrease of both V c and G s is larger in the direction Co, Ni, Mn and Cr. Whilst the Curie temperature is lowered almost linearly by Mn and Cr substitutions, it is slightly increased by Ni (up to x=4) and markedly enhanced by Co substitution. As far as the anisotropy is concerned, a more localized picture seems to be needed to explain 3d-magnetism in Fe-Cr and Fe-Mn systems than that required for Fe-Co and Fe-Ni systems.
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