Abstract
The crystal structure, magnetization, and spontaneous magnetostriction of Tb/sub 1-x/Nd/sub x/(Fe/sub 0.9/B/sub 0.1/)/sub 2/ alloys have been investigated. X-ray diffraction (XRD) analysis shows that the alloys consist predominantly of the cubic Laves phase with a MgCu/sub 2/-type structure for x/spl les/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/spl les/0.7 because of a large spontaneous magnetostriction along its <111> easy magnetization direction. The magnetostriction coefficient /spl lambda//sub 111/ decreases significantly with increasing x when 0/spl les/x/spl les/0.55. For x/spl ges/0.7, it is difficult to achieve saturation magnetization at room temperature due to increased amount of the Nd/sub 2/Fe/sub 14/B-type phase with large magnetocrystalline anisotropy.
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