Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1814726 | Physica B: Condensed Matter | 2009 | 5 Pages |
Abstract
Pseudobinary high Pr-content Tb1âxPrx(Fe0.4Co0.6)1.93 (0.70â¤xâ¤1.00) magnetostrictive alloys have been fabricated by a melt-spinning method. The effects of the composition, spinning, and annealing processes on the structure, thermal stability, and magnetic properties are investigated. At a wheel speed of vâ¤30 m/s, the as-spun ribbons consist of a mixture of (Tb,Pr)(Fe,Co)2 cubic Laves phase and some non-cubic phases. A single (Tb,Pr)(Fe,Co)2 phase with MgCu2-type structure is formed with the process for the speed of vâ¥35 m/s and subsequent annealing at 500 °C for 30 min. The lattice parameter of the Tb1âxPrx(Fe0.4Co0.6)1.93 Laves phase increases from 0.7354 nm for x=0.70 to 0.7384 nm for x=1.00 and approximately follows the linear Vegard's law. The Curie temperature decreases, while the saturation magnetization increases as increasing Pr content. The Pr-rich alloys possess the relatively lower coercivity and the faster saturation of magnetostriction as compared with the Tb-rich alloys, which can be understood by their lower magnetic anisotropy.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
J.J. Liu, X.C. Liu, W.S. Zhang, P.Z. Si,