二元 Er67.5Co32.5 金属玻璃在氢液化温度附近的卓越磁致效应

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2024-09-12 DOI:10.1016/j.jnoncrysol.2024.123224

P.J. Wang, Q. Wang, J.M. Yuan, T.G. Zhai, Z.B. Li, D. Ding, L. Xia

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引用次数: 0

摘要

我们报告了一种接近氢液化温度的二元 Er67.5Co32.5 金属玻璃 (MG) 的优异磁致效应。二元 MG 带是通过熔融纺丝法制造的。与大多数其他稀土-钴二元合金相比，Er67.5Co32.5 合金具有更好的玻璃成型性。在 0-5 T 条件下，Er67.5Co32.5 非晶带的最大磁熵变（-ΔSmpeak）和制冷量（RC）分别达到 17.47 J/（kg × K）和 472 J/kg，接近其居里温度（Tc，∼ 11 K）。观察了二元 MG 的磁化和磁致行为，并研究了其中的机理。

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Excellent magnetocaloric effect near the hydrogen liquefaction temperature of a binary Er67.5Co32.5 metallic glass

We reported the excellent magnetocaloric effect of a binary Er_67.5Co_32.5 metallic glass (MG) near the hydrogen liquefaction temperature. The binary MG ribbon was fabricated by a melt-spinning method. The Er_67.5Co_32.5 alloy exhibits a better glass formability than most of other rare earth (RE)-Co binary alloys. The maximum magnetic entropy change (−ΔS_m^peak) and refrigeration capacity (RC) of the Er_67.5Co_32.5 amorphous ribbon under 0–5 T reach to 17.47 J/(kg × K) near its Curie temperature (T_c, ∼ 11 K) and 472 J/kg, both of which are rather high among the RE-based MGs with a T_c around 10 K and imply the potential application perspective as magnetic refrigerants for hydrogen liquefaction. The magnetization as well as magnetocaloric behaviors of the binary MG were observed, and the mechanism involved was investigated.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.