The magnetocaloric effect of the Gd-based amorphous composite with Gd nanocrystals

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	The magnetocaloric effect of the Gd-based amorphous composite with Gd nanocrystals
	Wang, YT ; Liu, ZD ; Yi, J ; Xue, ZY
刊名	ACTA PHYSICA SINICA
	2012
卷号	61 期号:5
关键词	MAGNETIC ENTROPY CHANGE BULK METALLIC GLASSES MARTENSITIC-TRANSFORMATION CURIE-TEMPERATURE HEUSLER ALLOY REFRIGERATION CLUSTERS
ISSN号	1000-3290
通讯作者	Wang, YT (reprint author), N China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China.
中文摘要	The Gd-based amorphous/nanocrystal composite is prepared by controlling the cooling rate and the element ratio. The X-ray diffraction, differential scanning calorimeter and atomic force microscope/magnetic force microscope are used to confirm the composite microstructures from different perspectives. The magnetic test shows the great enhancement of magnetocaloric effect in the metallic glassy composite. The large magnetic refrigerant capacity (RC) up to 10(3) J. kg(-1) is more than double the RC values of the Gd-based bulk metallic glass and pure Gd. The full width at half maximum of the magnetic entropy change (Delta S-m) peak almost spreads over the whole low-temperature range, which is five times wider than that of the pure Gd. The maximum Delta S-m approaches a nearly constant value in a wide temperature span (over 80 K). The super paramagnetic nanoclusters of the composite increase the magnetic refrigerant capacity greatly. In combination with the low magnetic hysteresis and large resistance, the metallic glass composite may be a potential candidate for the ideal Ericsson-cycle magnetic refrigeration.
收录类别	SCI
资助信息	National Natural Science Foundation of China [51101056, 51006034]; National Basic Research Program of China [2011CB710706]; State Key Laboratory of Advanced Metals and Materials, China [2010Z-02]; Planned Science and Technology Project of Suzhou City, China [SYG201002]
语种	中文
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/45310]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, YT,Liu, ZD,Yi, J,et al. The magnetocaloric effect of the Gd-based amorphous composite with Gd nanocrystals[J]. ACTA PHYSICA SINICA,2012,61(5).
APA	Wang, YT,Liu, ZD,Yi, J,&Xue, ZY.(2012).The magnetocaloric effect of the Gd-based amorphous composite with Gd nanocrystals.ACTA PHYSICA SINICA,61(5).
MLA	Wang, YT,et al."The magnetocaloric effect of the Gd-based amorphous composite with Gd nanocrystals".ACTA PHYSICA SINICA 61.5(2012).