Title :
Structural, magnetic, and magnetostrictive properties of Tb1-xNdx(Fe0.9B0.1)2 alloys
Author :
Ren, W.J. ; Or, S.W. ; Chan, H.L.W. ; Zhao, X.G. ; Liu, J.J. ; Zhang, Z.D.
Author_Institution :
Shenyang Nat. Lab. for Mater. Sci., Chinese Acad. of Sci., Shenyang, China
fDate :
7/1/2004 12:00:00 AM
Abstract :
The crystal structure, magnetization, and spontaneous magnetostriction of Tb1-xNdx(Fe0.9B0.1)2 alloys 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 λ111 decreases 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.
Keywords :
X-ray diffraction; boron alloys; crystal structure; iron alloys; magnetic anisotropy; magnetostriction; neodymium alloys; terbium alloys; Curie temperature; Laves phase; Tb1-xNdx(Fe0.9B0.1)2; X-ray diffraction analysis; alloys; crystal structure; lattice parameter; magnetic properties; magnetization; magnetocrystalline anisotropy; magnetostriction; magnetostrictive properties; structural properties; Iron alloys; Magnetic anisotropy; Magnetic properties; Magnetostriction; Neodymium; Perpendicular magnetic anisotropy; Saturation magnetization; Temperature; X-ray diffraction; X-ray scattering; Crystal structure; Laves phase; magnetization; magnetostriction;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.830177