| 掺杂Sn对(La, Ce)(Fe, Al, Si)13 合金磁热效应和相变性质的影响 |
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| 引用本文： | 宋博宇,韩永全,程娟,高磊,刘翠兰,黄焦宏. 掺杂Sn对(La, Ce)(Fe, Al, Si)13 合金磁热效应和相变性质的影响[J]. 稀有金属材料与工程, 2023, 52(7): 2335-2342 |
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| 作者姓名： | 宋博宇 韩永全 程娟 高磊 刘翠兰 黄焦宏 |
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| 作者单位： | 内蒙古工业大学,内蒙古 呼和浩特 010051;包头职业技术学院,内蒙古 包头 014030;先进轻金属材料开发与加工防护教育部工程研究中心,内蒙古 呼和浩特 010051,内蒙古工业大学,内蒙古 呼和浩特 010051;先进轻金属材料开发与加工防护教育部工程研究中心,内蒙古 呼和浩特 010051,白云鄂博稀土资源研究与综合利用国家重点实验室,内蒙古 包头 014030,白云鄂博稀土资源研究与综合利用国家重点实验室,内蒙古 包头 014030,白云鄂博稀土资源研究与综合利用国家重点实验室,内蒙古 包头 014030,白云鄂博稀土资源研究与综合利用国家重点实验室,内蒙古 包头 014030 |
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| 基金项目： | National Science Foundation of China (52066001); Science and Technology Plan Project of Inner Mongolia Autonomous Region (2020GG0313); Inner Mongolia Natural Science Foundation Project (2021MS05016); Research Program of Science and Technology at Universities of Inner Mongolia Autonomous Region of China (Grant No. NJZY22119); Northern Rare Earth Project (BFXT-2021-D-0013). |
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| 摘 要： | 研究了磁制冷材料La0.75Ce0.25Fe11.5-xAl0.2Si1.3Snx(x=0,0.05,0.1,0.2)的磁热效应和相变性质。X射线衍射结果表明,随着Sn掺杂浓度的增加,主相1:13相减少,α-Fe和LaFeSi相增加。引入密度泛函理论,结合实验结果得出,增加Sn掺杂浓度能够增大晶格常数,并增强相邻原子之间的交换相互作用,从而提高居里温度。当磁场变化为2 T时,体系中最大磁熵变为13.59 J·kg-1·K-1,其相对制冷能力为154 J/kg,具有成为磁制冷材料的潜力。通过Banerjee准则和等温熵变的场相关指数n确定当Sn掺杂浓度为0.05%(质量分数)时,合金由一级相变转变为二级相变。合金的相变行为对Sn含量非常敏感,可以通过调节Sn掺杂浓度,实现多级串联制冷。
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| 关 键 词： | 磁热效应 LaFeSi 相变 |
| 收稿时间： | 2023-03-01 |
| 修稿时间： | 2023-03-25 |
Effect of Sn Doping on Magnetocaloric Effect and Phase Transition Properties of (La, Ce)(Fe, Al, Si)13 Alloys |
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| Song Boyu,Han Yongquan,Cheng Juan,Gao Lei,Liu Cuilan and Huang Jiaohong. Effect of Sn Doping on Magnetocaloric Effect and Phase Transition Properties of (La, Ce)(Fe, Al, Si)13 Alloys[J]. Rare Metal Materials and Engineering, 2023, 52(7): 2335-2342 |
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| Authors: | Song Boyu Han Yongquan Cheng Juan Gao Lei Liu Cuilan Huang Jiaohong |
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| Affiliation: | Inner Mongolia University of Technology, Hohhot 010051, China;Baotou Vocational and Technical College, Baotou 014030, China;Engineering Research Center of Development and Processing Protection of Advanced Light Metals, Ministry of Education, Hohhot 010051, China,Inner Mongolia University of Technology, Hohhot 010051, China;Engineering Research Center of Development and Processing Protection of Advanced Light Metals, Ministry of Education, Hohhot 010051, China,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou 014030, China,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou 014030, China,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou 014030, China,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou 014030, China |
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| Abstract: | |
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| Keywords: | magnetocaloric effect LaFeSi phase transition |
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