Tuning magnetocaloric effect of Gd�CEr�CAl�CCo metallic glass through crystallization

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (0 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Abstract: Magnetization and magnetocaloric effect (MCE) of as-cast Gd-based bulk metallic glass (BMG) Gd24Er32Co24Al20 and the crystallized samples were investigated. Reentrant-spin-glass-like behavior was observed in the as-cast sample. With increasing degree of crystallization, the magnetic frustration increased, which could be seen from the increased divergence of the zero-.eld-cooled and .eld-cooled magnetization behavior (i.e., the spin-glass-like freezing behavior). The Curie temperature and magnetization decreased after crystallization. The as-cast BMG showed a large maximum magnetic entropy change (-DSm)of9.9(J kg -1K -1) under a .eld change of 5 T, which was comparable with that of Gd metal and other Gd-based metallic glasses. The maximum -DSm reduced to 6.7 (J kg -1K -1) after crystallization, which was still superior to the Fe-/Co-based amorphous alloys. Their good MCE combining with high electrical resistivity, outstanding mechanical properties, tunable nature, and suf.ciently soft magnetic property makes them to be attractive candidate for magnetic refrigerants in the low-temperature range.

Received: 07 February 2018 Published: 23 October 2018

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

http://gt.chinamet.cn/Jweb_gtyjxb_en/EN/ OR http://gt.chinamet.cn/Jweb_gtyjxb_en/EN/Y2018/V25/I6/619