Large glass-forming ability and magnetocaloric effect in Gd55Co20Al23Si2 bulk metallic glass

Li Qian, Cai Pingping, Shen Baolong, Makino Akihiro, Inoue Akihisa

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this study, we investigated the glass-forming ability (GFA) and magnetocaloric effect (MCE) of Gd55Co20Al23Si2 bulk glassy alloy. It is found that the addition of 2 at% Si is effective for extension of the supercooled liquid region (ΔTx), the ΔTx is 55 K for the Gd55Co20Al25 glassy alloy, and increases to 79 K for the Gd55Co20Al23Si2 alloy. As a result, Gd55Co20Al23Si2 glassy alloys with diameters up to 5 mm were successfully synthesized. The alloys also exhibit large MCE, i.e., the magnetic entropy change (ΔSm) of 8.9 J kg-1 K-1, the full width at half maximum of the ΔSm (δTFWHM) of 87 K, and the refrigerant capacity (RC) of 774 J kg-1.

Original languageEnglish
Pages (from-to)440-443
Number of pages4
JournalJournal of Magnetics
Volume16
Issue number4
DOIs
Publication statusPublished - 2011

Keywords

  • Gd-based bulk glassy alloys
  • Glass-forming ability
  • Magnetic entropy change
  • Magnetocaloric effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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