Tailoring Gd-doped Er-Co amorphous alloys with platform-like magnetocaloric response for high-efficiency cryogenic hydrogen liquefaction

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-06-20 DOI:10.1016/j.jallcom.2025.181747

Z.R. Zhang, Q. Wang, Q. Yang, B.Z. Tang, P. Yu, D. Ding, L. Xia

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Abstract

Magnetic refrigeration (MR) with large effective refrigeration capacity (RC_eff) across a wide temperature range from 20 K to 77 K is heralded as a pivotal technology for hydrogen liquefaction owing to its inherently high efficiency. Here, Er_61-xCo₃₉Gd_x (x = 2, 6, 10, 15, 20, 25) amorphous alloys (AAs) with significant refrigeration capacity from 13 K to 80 K were synthesized. Based on these AAs, two amorphous hybrids that demonstrate platform-like magnetic entropy change (−ΔS_m) profiles over the full temperature spectrum from hydrogen liquefaction to nitrogen liquefaction were successfully developed, with RC_eff ≥ 400 J/kg. The wide operation temperature interval (ΔT = 60 ~ 65 K) and the high RC_eff implies the exceptional cooling efficiency of the Er_61-xCo₃₉Gd_x amorphous hybrids as magnetic refrigerants in the hydrogen liquefaction refrigerator.

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具有平台型磁热响应的gd掺杂Er-Co非晶态合金用于高效低温氢液化

磁致冷（MR）由于其固有的高效率，在20 ~ 77 K的宽温度范围内具有较大的有效致冷能力（RCeff），被誉为氢液化的关键技术。本文合成了Er61-xCo39Gdx （x = 2,6,10,15,20,25）非晶合金（AAs），在13k至80k范围内具有显著的制冷性能。在此基础上，成功开发了两种非晶杂化体，它们在氢液化到氮液化的全温度谱上表现出类似平台的磁熵变化（−ΔSm）， RCeff≥400 J/kg。较宽的工作温度区间（ΔT = 60 ~ 65 K）和较高的RCeff表明，Er61-xCo39Gdx非晶态杂化体作为磁性制冷剂在氢液化制冷机中具有优异的制冷效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.