Magnetic properties and magnetocaloric responses in the Gd60Al20Cu20 amorphous ribbon

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

Journal of Non-crystalline Solids Pub Date : 2025-04-09 DOI:10.1016/j.jnoncrysol.2025.123526

Yang Xie, Longfei Wang, Yingzhe Na, Yikun Zhang

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引用次数: 0

Abstract

The magnetocaloric (MC) responses in many rare-earth (RE)-based amorphous materials have been extensively determined in recent years aimed to develop suitable candidate materials for cryogenic magnetic refrigeration (MR) application. We herein fabricated the Gd₆₀Al₂₀Cu₂₀ amorphous ribbon by melt-spun method and experimentally determined its glassy-forming ability (GFA), magnetic properties and MC responses. The Gd₆₀Al₂₀Cu₂₀ amorphous ribbon exhibits good GFA with supercooled liquid region of 34.5 K and reveals a broad second-order type magnetic transition around 100 K. Considerable cryogenic MC responses were realized in present Gd₆₀Al₂₀Cu₂₀ amorphous ribbon, identified by the maximum magnetic entropy change/temperature-averaged entropy change (10 K-lift) and refrigerant capacity/relative cooling power. These MC parameters in present Gd₆₀Al₂₀Cu₂₀ amorphous ribbon under magnetic field changes of 0–5 T are 8.43/8.39 J/kgK and 773.16/987.62 J/kg, respectively, which are comparable to most realized RE-based amorphous materials with prominent cryogenic MC responses, making the present Gd₆₀Al₂₀Cu₂₀ amorphous ribbon may also considerable for application.

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Gd60Al20Cu20非晶带的磁性和磁热响应

近年来，人们对稀土基非晶材料的磁热响应进行了广泛的研究，旨在开发适合低温磁制冷应用的候选材料。本文采用熔融纺丝法制备了Gd60Al20Cu20非晶带，并对其玻璃化成形能力、磁性能和MC响应进行了实验测定。Gd60Al20Cu20非晶态带具有良好的GFA，过冷液区为34.5 K，在100 K左右表现出较宽的二阶型磁跃迁。通过最大磁熵变/温度平均熵变（10k -lift）和制冷剂容量/相对冷却功率来确定Gd60Al20Cu20非晶带的低温MC响应。本文制备的Gd60Al20Cu20非晶带在0-5 T磁场变化下的MC参数分别为8.43/8.39 J/kgK和773.16/987.62 J/kg，与大多数已实现的re基非晶材料相当，具有显著的低温MC响应，具有相当的应用价值。

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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.