Tuning the magnetocaloric response of Er-based metallic glasses by varying structural order in disorder

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 结构陶瓷与复合材料工程研究中心 > 期刊论文

	Tuning the magnetocaloric response of Er-based metallic glasses by varying structural order in disorder
	Luo, Qiang 1; Tang, Meibo 2; Shen, Jun 1
刊名	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
	2016-03-01
卷号	401 页码:406-411
关键词	Metallic glass Magnetocaloric effect Nanocrystallization Microstructure
英文摘要	The effects of structural order on magnetocaloric response have been explored in Er60Al16Co20Ni4 metallic glass (MG). Compared with the fully amorphous structure of the as-spun ribbon (cooling rate similar to 10(6) K/s), the rod sample fabricated with a lower cooling rate (similar to 10(3) K/s) contains a few crystalline phases embedded in the amorphous matrix. Annealing the ribbon in the supercooled liquid region results in formation of a large amount of nanocrystalline phase. Both the as-spun ribbon and rod samples show a single spin-glass-like transition behavior, while the annealed sample exhibits double-freezing processes. It is found that the sparsely distributed micro-sized crystalline phases (content fraction of 13%) exert a slight effect on the magnetic entropy change (MEC). However, densely distributed nanocrystallization phase (similar to 50%) in amorphous matrix leads to an obvious reduction of the MEC and refrigerant capacity (RC). The exponent n of field dependence of MEC is found to related to exchange frustration, random anisotropy, and structure ordering degrees. (C) 2015 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Materials Science, Multidisciplinary ; Physics, Condensed Matter
研究领域[WOS]	Materials Science ; Physics
关键词[WOS]	MAGNETIC REFRIGERATION ; TEMPERATURE ; MICROWIRES ; ALLOY
收录类别	SCI
语种	英语
WOS记录号	WOS:000366585200058
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/23312]
专题	上海硅酸盐研究所_结构陶瓷与复合材料工程研究中心_期刊论文
作者单位	1.Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Luo, Qiang,Tang, Meibo,Shen, Jun. Tuning the magnetocaloric response of Er-based metallic glasses by varying structural order in disorder[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2016,401:406-411.
APA	Luo, Qiang,Tang, Meibo,&Shen, Jun.(2016).Tuning the magnetocaloric response of Er-based metallic glasses by varying structural order in disorder.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,401,406-411.
MLA	Luo, Qiang,et al."Tuning the magnetocaloric response of Er-based metallic glasses by varying structural order in disorder".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 401(2016):406-411.