材料期刊网

The structure, Curie temperatures and magnetostriction of the alloys Dy0.9-xTbxPr0.1Fe1.85, Dy1-xTbx(Fe0.9Mn0.1)(1.8) and Dy0.9-xTbxPr0.1(Fe0.9Mn0.1)(1.8) have been investigated, These alloys are essentially single phase with cubic Laves structure. The lattice parameters and Curie temperatures increase steadily with increasing Tb content, The Tb dependence of the magnetostriction in various applied fields for polycrystalline Dy0.9-xTbxPr0.1Fe1.85 and Dy0.9-xTbxPr0.1(Fe0.9Mn0.1)(1.8) alloys exhibits peaks at x = 0.25 and 0.3, respectively. From a comparison of Dy1-xTbxFe2 and Dy1-xTbx(Fe0.9Mn0.1)(2), it appears that the addition of Pr shifts the magnetocrystalline anisotropy compensation composition to lower Tb contents.