Title :
Magnetization and magnetostriction of melt-spun TbDyCeFe ribbons
Author :
Mahon, Colm Mac ; Jenner, Alan G. ; Ahlers, Heiko
Author_Institution :
Dept. of Phys., Hull Univ., UK
fDate :
9/1/2000 12:00:00 AM
Abstract :
The magnetization and magnetoelastic properties of melt-spun ribbons Tb.3Dy.7(CezFe1-z) 1.95 (0.025⩽z⩽0.2) have been investigated as a function of increasing cerium content. The ribbons exhibit a nanocrystalline structure which becomes more amorphous with increasing cerium content. Room temperature coercivities remain ~80 kA/m but low temperature coercivities increase with cerium percentage. A change in the anisotropy is observed, below 50 K, for the 0.125 composition, resulting in nonsaturation of the sample. Saturation magnetostriction λ, varies considerably with the addition of Ce, reaching a maximum of 850 ppm at 230 K, for z=0.075 composition
Keywords :
amorphous magnetic materials; cerium alloys; coercive force; dysprosium alloys; ferromagnetic materials; iron alloys; magnetisation; magnetostriction; metallic glasses; nanostructured materials; stoichiometry; terbium alloys; 20 C; 230 K; 50 K; Tb0.3Dy0.7(CezFe1-z) 1.95; TbDyCeFe; amorphous phase; anisotropy; cerium content; low temperature coercivities; magnetization; magnetoelastic properties; magnetostriction; melt-spun TbDyCeFe ribbons; melt-spun ribbons; nanocrystalline structure; room temperature coercivities; saturation magnetostriction; Amorphous materials; Anisotropic magnetoresistance; Cerium; Coercive force; Iron; Magnetic properties; Magnetization; Magnetostriction; Nanostructures; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
