The crystal structure, magnetization, and spontaneous magnetostriction of Tb1-xNdx(Fe0.9B0.1)2alloys have been investigated. X-ray diffraction (XRD) analysis shows that the alloys consist predominantly of the cubic Laves phase with a MgCu2-type structure for x ≤ 0.55. Increasing in lattice parameter and decreasing in Curie temperature with increasing x from 0 to 0.55 reveals an increment in the Nd content in the Laves phase. The (440) XRD line of the Laves phase splits doubly when x ≤ 0.7 because of a large spontaneous magnetostriction along its 〈111〉 easy magnetization direction. The magnetostriction coefficient λ111decreases significantly with increasing x when 0 ≤ x ≤ 0.55. For x ≥ 0.7, it is difficult to achieve saturation magnetization at room temperature due to increased amount of the Nd2Fe14B-type phase with large magnetocrystalline anisotropy.
- Crystal structure
- Laves phase
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering