LaFe13−xSix（x = 1.3, 1.4, 1.5）复合材料的磁热效应比较研究

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-05-26 DOI:10.1016/j.cap.2025.05.009

Qianhui Mao , Hengchang Xu , Xianxiang Wang , Yuan Wang , Haidong Li , Lisha Xue , Yang Liu , Jinqin Ye , Jun Ding , Xiaofan Xu , Jinhu Yang

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引用次数: 0

摘要

我们研究了LaFe13−xSix分别烧结成层状和粉末混合物的两种复合材料的磁热效应。发现两种复合材料的铁磁居里温度均达到225 K，明显高于其部件。在场差ΔH = 0-2 T和0-3 T时，层状化合物的最大磁熵变化分别为3.4(8)和5.0(1)J kg−1 K−1。对于粉末状混合物，在相同的ΔH下，数值急剧上升到9.0(6)和11.9(4)J kg−1 K−1。使用温度平均熵变（TEC）和相对冷却功率（RCP）估计材料的磁制冷效用。

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Magnetocaloric effect of LaFe13−xSix(x = 1.3, 1.4, 1.5) composites – A comparative study

We have investigated the magnetocaloric effect of two types of composites, which are obtained by sintering LaFe

_{13 - x}

Si_x into layer and powder mixtures, respectively. It is found that the ferromagnetic Curie temperature reaches 225 K for both composites, significantly higher than their component parts. The evaluated maximum magnetic entropy change for the layered compound is 3.4(8) and 5.0(1) J kg⁻¹ K⁻¹ at field differences ΔH = 0-2 T and 0-3 T, respectively. In the case of powdered mixture, the values rise dramatically to 9.0(6) and 11.9(4) J kg⁻¹ K⁻¹ at the same ΔH. The material's utility for magnetic refrigeration is estimated using the Temperature averaged Entropy Change (TEC) and the Relative Cooling Power (RCP).

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.