Preparation and magnetic properties of R-Fe-B permanent magnet materials containing Fe3B as the main phase

doi:10.1016/0304-8853(90)90496-D

Journal of Magnetism and Magnetic Materials

Volume 83, Issues 1–3, January 1990, Pages 228-230

https://doi.org/10.1016/0304-8853(90)90496-D Get rights and content

Abstract

The coercivity of Nd or Pr containing Fe₃B based permanent magnet materials can be improved to approximately μ₀H_c = 0.45 T by partial substitutions of the rare earth atoms by Tb or Dy. Full substitution leads to low coercivities due to the formation of the magnetically soft phase R₃Fe₆₂B₁₄, which replaces the magnetically hard R₂Fe₁₄B phase.

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Citation Excerpt :
However, due to the different phase transformation route, that is, crystallization from the amorphous ribbons, it was observed here that the boride formed is the Fe3B. Others works [36–46], also highlighted the formation of Fe3B during the crystallization of Fe-based amorphous alloys containing boron, hence, justifying the absence of Cr2B in the crystallized condition. It is worth noticing that in all the boride phases observed in this work it is likely that the element Cr is also present substituting Fe, that is, with Cr atoms partly occupying Fe-sites.
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Preparation and magnetic properties of R-Fe-B permanent magnet materials containing Fe3B as the main phase

Abstract

J. Less-Common Met.

J. Magn. Magn. Mat.

J. Magn. Magn. Mat.

Preparation and magnetic properties of R-Fe-B permanent magnet materials containing Fe₃B as the main phase