Author :
Ono, Hideaki ; Shimada, Munekatsu ; Toma, Hideo
Author_Institution :
Mater. Res. Lab., Nissan Motor Co. Ltd., Yokosuka, Japan
Abstract :
Magnetostrictive properties of (Tb0.5Dy0.5)1-xRExFe1.9 (x=0-0.05, RE=Y, Ce, Sm, Gd, Ho, Yb) polycrystalline compounds were studied. Each rare-earth element formed a RE-Fe2 Laves compound with a different lattice spacing. Corresponding to this difference, (Tb0.5Dy0.5)0.95RE0.05Fe1.9 alloys showed a variation in lattice spacing as a result of the substitution of rare-earth elements and the prestress dependence of magnetostriction changed noticeably. In the case of Y, Sm, and Gd substitution, which showed greater lattice spacing than that of the Tb0.5Dy0.5Fe1.9 alloy, the prestress dependence and maximum magnetostriction decreased. On the other hand, in the case of Ce, Ho, and Yb substitution, which showed a decrease in lattice spacing, the conspicuous prestress dependence was the same as that of the Tb0.5Dy0.5Fe1.9 alloy and the maximum magnetostriction was greater than that of the latter alloy.
Keywords :
dysprosium alloys; ferromagnetic materials; iron alloys; magnetostriction; rare earth alloys; terbium alloys; RE-Fe2 Laves compound; lattice spacing; magnetostriction prestress dependence; magnetostrictive properties; maximum magnetostriction; polycrystalline Tb-Dy-Fe alloys; rare-earth element substitution effect; Iron alloys; Lattices; Magnetic anisotropy; Magnetic materials; Magnetic properties; Magnetostriction; Perpendicular magnetic anisotropy; Samarium alloys; Saturation magnetization; Soft magnetic materials;
