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Structure and magnetostriction of Tb0.4Nd0.6(Fe0.8Co0.2) x alloys |
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| Authors: | Z. B. Pan J. J. Liu R. Wang X. Y. Liu J. Wang N. K. Sun P. Z. Si |
| Affiliation: | 1. Faculty of Materials Science and Chemical Engineering, and Department of Physics, Ningbo University, Ningbo, 315211, China 2. School of Science, Shenyang Ligong University, Shenyang, 110168, China 3. School of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, China |
| Abstract: | Structural, magnetic and magnetostrictive properties of Tb0.4Nd0.6(Fe0.8Co0.2) x (1.50 ≤ x ≤ 1.90) alloys have been investigated by means of X-ray diffraction (XRD), a vibrating sample magnetometer and a standard strain technique. XRD analysis shows the presence of single Laves phase with a cubic MgCu2-type structure for the high Nd content alloy around the composition of x = 1.80, which tends to be formed by curing at relatively low annealing temperature. The easy direction of magnetization at room temperature is observed toward <111> axis, accompanied by a rhombohedral distortion with a large spontaneous magnetostriction λ111. An optimized effect on the linear anisotropic magnetostriction, 360 ppm at 3 kOe, was observed for the high Nd content Tb0.4Nd0.6(Fe0.8Co0.2)1.80 alloy, which can be attributed to its single Laves phase, the large λ111 (~1,520 ppm) of the MgCu2-type (Tb,Nd)(Fe,Co)2 phase and the good soft magnetic behaviors. |
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