Investigation of Strong Tailored Magnetocaloric Effect in Ba(Fe1-xScx)12O19

IF 1.6 4区物理与天体物理 Q3 PHYSICS, APPLIED Journal of Superconductivity and Novel Magnetism Pub Date : 2024-08-20 DOI:10.1007/s10948-024-06815-5

Mahmoud A. Hamad, Hatem R. Alamri

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Abstract

By simulating the thermomagnetization of Ba(Fe_1-xSc_x)₁₂O₁₉ from approximately 100 to 750 K, the magnetocaloric effect (MCE) in Ba(Fe_1-xSc_x)₁₂O₁₉ samples is approximated. Intriguingly, the thermomagnetic property of the undoped sample BaFe₁₂O₁₉ is described as a conventional MCE for high temperatures. However, at doping levels x of 0.128, 0.153, and 0.189, respectively, the thermomagnetic property of Sc-doped samples is defined as an inverse MCE below temperatures of 163, 239, and 318 K. In contrast, thermomagnetic property of Ba(Fe_1-xSc_x)₁₂O₁₉ is described as conventional MCE above those temperatures. Additionally, Sc doping makes it possible for MCE in Ba(Fe_1-xSc_x)₁₂O₁₉ to be strongly tailored. This is helpful for operating a magnetic refrigerator (MR) which occurs in various temperature ranges and results in a higher working temperature range. A promising function for Ba(Fe_1-xSc_x)₁₂O₁₉ samples in MR at high-temperature applications in the automotive and food industries or aerospace.

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研究 Ba(Fe1-xScx)12O19 中的强定制磁ocaloric 效应

通过模拟 Ba(Fe1-xScx)12O19 在大约 100 至 750 K 的热磁化过程，近似地描述了 Ba(Fe1-xScx)12O19 样品中的磁致效应 (MCE)。耐人寻味的是，未掺杂样品 BaFe12O19 的热磁性能被描述为高温下的传统 MCE。然而，当掺杂水平 x 分别为 0.128、0.153 和 0.189 时，掺 Sc 样品的热磁性能在低于 163、239 和 318 K 的温度下被定义为反 MCE。此外，掺杂 Sc 使 Ba(Fe1-xScx)12O19 中的 MCE 具有很强的定制性。这有助于在各种温度范围内操作磁制冷机（MR），从而获得更高的工作温度范围。Ba(Fe1-xScx)12O19样品在汽车、食品工业或航空航天等高温应用领域的磁制冷器中的功能前景广阔。

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来源期刊

Journal of Superconductivity and Novel Magnetism 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.10%

发文量

342

审稿时长

3.5 months

期刊介绍： The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.

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