Significant reduction of phase-transition hysteresis for magnetocaloric (La1-xCex)(2)Fe11Si2Hy alloys by microstructural manipulation
文献类型：期刊论文
| 作者 | Liu, Yanfeng; Fu, Xiaoqian; Yu, Qian; Zhang, Mingxiao; Liu, Jian |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2021 |
| 卷号 | 207 |
| 关键词 | HYDROGEN |
| 英文摘要 | First-order magnetostructural phase transitions are inevitably accompanied by large hysteresis, which evokes non-ignorable energy losses a main challenge for the utilization of giant magnetocaloric effect (MCE) materials in the emerging magnetic cooling technology. In this work, we present a novel approach to reduce the hysteresis and simultaneously to remain the giant entropy change in La-Fe-Si-based MCE alloys by microstructural manipulation. The microstructure evolution is comprehensively studied by high angle annular dark field-scanning transmission electron microscope, three-dimensional atom probe and geometric phase analysis. For the LaFe13-xSix system via co-doping of Ce and H atoms, we have observed the appearance of nanograins in size range of 5 - 50 nm that is totally different from the widely reported compositions. Such refinement can be ascribed to the release of internal stress caused by the inhomogeneous distribution of hydrogen atoms. With the formation of the nanocrystals in (La1-xCex)(2)Fe11Si2Hy alloys, the value of hysteresis loss can be monotonously reduced from 48.3 to 0.6 J kg(-1). More importantly, the magnetostructural transition keeps an obvious first-order type, which leads to a large adiabatic temperature change of 2.03 K in 1.3 T upon 10(5) magnetic cycles, as well as a high reversible refrigeration capacity of 89.4 J kg(-1) for (La0.6Ce0.4)(2)Fe11Si2Hy. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22063]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Liu, J (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. 2.Liu, J (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 3.Liu, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. 4.Liu, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Liu, Yanfeng,Fu, Xiaoqian,Yu, Qian,et al. Significant reduction of phase-transition hysteresis for magnetocaloric (La1-xCex)(2)Fe11Si2Hy alloys by microstructural manipulation[J]. ACTA MATERIALIA,2021,207. |
| APA | Liu, Yanfeng,Fu, Xiaoqian,Yu, Qian,Zhang, Mingxiao,&Liu, Jian.(2021).Significant reduction of phase-transition hysteresis for magnetocaloric (La1-xCex)(2)Fe11Si2Hy alloys by microstructural manipulation.ACTA MATERIALIA,207. |
| MLA | Liu, Yanfeng,et al."Significant reduction of phase-transition hysteresis for magnetocaloric (La1-xCex)(2)Fe11Si2Hy alloys by microstructural manipulation".ACTA MATERIALIA 207(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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