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Structural, Magnetic, and Magnetoelastic Properties of High Nd-Content Laves Alloys Prepared by Solid-State Synthesis

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Abstract

The magnetostrictive alloys with composition Tb0.4Nd0.6(Fe0.8Co0.2)x (1.50 ≤ × ≤ 1.90) are synthesized using the solid-state mechanical alloying (MA) method followed by sintering. The phase component, structure, thermal stability, and magnetoelastic properties are investigated as functions of composition, milling process, and annealing temperature. An amorphous phase companied by free alpha-iron is formed by MA in a high-energy ball mill, which crystallizes into MgCu2-type and PuNi3-type structures with different annealing temperatures. A single Laves phase for the high Nd-content Tb0.4Nd0.6(Fe0.8Co0.2)1.60 is formed at optimal conditions for heat treating at 700 °C for 30 min. A large linear anisotropic magnetostriction λa (=λ||–λ⊥) as high as 560 ppm at 12 kOe is obtained for the sintered alloy, which may make it a promising magnetostrictive material. Meanwhile, this work may help to open up a new way to search for Laves phase magnetostrictive materials containing Nd.

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Funding

This work was supported by the National Natural Science Foundation of China (No. 50801039), Zhejiang Province (Y18E010005), Ningbo city (20191JCGY010115), and K.C. Wong Magna Fund in Ningbo University.

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Authors and Affiliations

  1. Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo, 315211, China

    C. Y. Shen, J. J. Liu, H. T. Zhang, W. B. Shen & Z. B. Pan

  2. College of Materials Science & Engineering, China Jiliang University, Hangzhou, 310018, China

    P. Z. Si

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  1. C. Y. Shen
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  2. J. J. Liu
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  3. H. T. Zhang
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  4. W. B. Shen
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Correspondence to J. J. Liu or Z. B. Pan.

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Shen, C.Y., Liu, J.J., Zhang, H.T. et al. Structural, Magnetic, and Magnetoelastic Properties of High Nd-Content Laves Alloys Prepared by Solid-State Synthesis. J Supercond Nov Magn 32, 3609–3613 (2019). https://doi.org/10.1007/s10948-019-5116-2

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  • DOI: https://doi.org/10.1007/s10948-019-5116-2

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