Stable magnetocaloric effect over an ultrawide temperature range of 146–320 K via hydrostatic pressure in kagome magnets

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED Applied Physics Letters Pub Date : 2025-01-23 DOI:10.1063/5.0243560

Junchao Sheng, Jiawang Xu, Lei Xi, Shouyuan Xing, Shihao Li, Xucai Kan, Xinqi Zheng, He Huang, Lichen Wang, Yuyan Han, Shiming Zhou, Baogen Shen, Shouguo Wang

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Abstract

Solid-state refrigeration leveraging the magnetocaloric effect (MCE) presents a sustainable and energy-efficient alternative to traditional gas compression refrigeration technologies. However, the practical utility of most magnetocaloric materials is restricted by their narrow operational temperature window. In this work, a stable magnetocaloric effect across an ultrawide temperature range of 146–320 K was achieved in Hf0.85Ta0.15Fe2 magnet via the hydrostatic pressure manipulation. Furthermore, the underlying mechanism for the extended and stable MCEs under hydrostatic pressure has been revealed by magnetization measurements and first-principles calculations. The material systems characterized by strong spin–lattice coupling exhibit considerable potential for externally manipulated hybrid-field-tuned magnetic properties and magnetocaloric performance, providing a convenient and practical approach for advancing applications in magnetic refrigeration technologies.

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kagome磁体在146-320 K的超宽温度范围内通过静水压力产生稳定的磁热效应

利用磁热效应（MCE）的固态制冷为传统气体压缩制冷技术提供了一种可持续和节能的替代方案。然而，大多数磁热材料的实际应用受到其狭窄的工作温度窗口的限制。在这项工作中，通过静水压力操作，在Hf0.85Ta0.15Fe2磁铁中实现了在146-320 K超宽温度范围内的稳定磁热效应。此外，通过磁化测量和第一性原理计算揭示了静水压力下mce扩展和稳定的潜在机制。以强自旋-晶格耦合为特征的材料体系在外部操纵的混合场调谐磁性和磁热性能方面表现出相当大的潜力，为推进磁制冷技术的应用提供了方便和实用的方法。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.