Improvement of Curie temperature and magnetic entropy change of a Fe88Zr8B4 metallic glass by minor Nd substitution

A small amount of Zr in the Fe88Zr8B4 metallic glass (MG) was replaced by Nd and the fully amorphous Fe88Zr8-xNdxB4 (x = 2, 4) ribbons were successfully fabricated. The influences of Nd substitution on the glass formability, Curie temperature and magnetic entropy change (−ΔSm) of a Fe88Zr8B4 MG were...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2023-07, Vol.611, p.122347, Article 122347
Main Authors: Wang, P.J., Wang, Q., Zheng, S. H., Zhu, L.Z., Ding, D., Tang, B.Z., Yu, P., Yao, J.L., Xia, L.
Format: Article
Language:English
Subjects:
Amorphous alloy
Curie temperature
Magnetocaloric effect
Spin-glass-like behavior
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Summary:A small amount of Zr in the Fe88Zr8B4 metallic glass (MG) was replaced by Nd and the fully amorphous Fe88Zr8-xNdxB4 (x = 2, 4) ribbons were successfully fabricated. The influences of Nd substitution on the glass formability, Curie temperature and magnetic entropy change (−ΔSm) of a Fe88Zr8B4 MG were investigated. It was found that the minor Nd substitution not only results in the improved glass formability, but also enhances the −ΔSm peak to ∼ 3.65 J/(kg×K) at 314 K for x = 2, and to ∼ 4.10 J/(kg×K) at 335 K for x = 4 under 5 T. The mechanisms for the weak spin-glass-like behavior and the improvement of −ΔSm induced by minor Nd substitution were investigated.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2023.122347