Magnetocaloric properties of LaFe11.4Si1.6 based amorphous alloys

doi:10.1016/j.jallcom.2020.156191

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	Magnetocaloric properties of LaFe11.4Si1.6 based amorphous alloys
	Li, Fengmei ; Feng, Jingqing ; Yi, Jun ; Wang, Gang ; Wang, Jun-Qiang ; Huo, Juntao
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2020
卷号	845
关键词	MAGNETIC ENTROPY CHANGE ROOM-TEMPERATURE RARE-EARTH PHASE-TRANSITION FE REFRIGERATION STABILITY LA(FE MN
DOI	10.1016/j.jallcom.2020.156191
英文摘要	The LaFe13-xSix type magnetic refrigeration material exhibits a large Delta S-M but in a narrow temperature range about 180-220 K, which limits its application. In order to elevate the magnetic transition temperature, the LaFe11.4Si1.6 alloy is alloyed with B and Nb to prepare amorphous alloys (LaFe11.4Si1.6)((96)-x)/14BxNb4 (x = 14.8, 19, 23.2). Under a magnetic field of 5 T, its maximum magnetic entropy change is 2.67 Jkg(-1) K-1, but the temperature range can exceed 180 K, which yields a refrigeration capacity (RC) of about 417 Jkg(-1) comparable to that of crystalline LaFe13-xSix materials. It is intriguing that this amorphous alloy is a good soft magnetic material with higher saturation magnetization and lower coercivity compared to the crystalline material. It is more interesting that, after minor alloying of B and Nb, this amorphous alloy has a higher T-C of about 500 K compared to the crystalline LaFe13-xSix. Our works show amorphizing the crystalline LaFe11.4Si1.6 alloy imparts it a wider magnetic transition temperature range, thus increasing the RC value. (C) 2020 Elsevier B.V. All rights reserved.
学科主题	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20300]
专题	2020专题
作者单位	1.Wang, JQ 2.Huo, JT (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Zhejiang, Peoples R China. 3.Huo, JT (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Li, Fengmei,Feng, Jingqing,Yi, Jun,et al. Magnetocaloric properties of LaFe11.4Si1.6 based amorphous alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,845.
APA	Li, Fengmei,Feng, Jingqing,Yi, Jun,Wang, Gang,Wang, Jun-Qiang,&Huo, Juntao.(2020).Magnetocaloric properties of LaFe11.4Si1.6 based amorphous alloys.JOURNAL OF ALLOYS AND COMPOUNDS,845.
MLA	Li, Fengmei,et al."Magnetocaloric properties of LaFe11.4Si1.6 based amorphous alloys".JOURNAL OF ALLOYS AND COMPOUNDS 845(2020).