Large adiabatic temperature rise above the water ice point of a minor Fe substituted Gd50Co50amorphous alloy

B. Z. Tang, D. Q. Guo, D. Ding, L. Xia, Kang Cheung Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

In this study, we have successfully improved the Curie temperature of Gd50Co50amorphous alloy from 267 K to 277 K by a minor Fe addition as a replacement for Co. The Gd50Co48Fe2as-spun ribbons exhibit typical characteristics of a soft magnetic amorphous alloy. The magnetic entropy change peak for this amorphous alloy was slightly decreased by the minor Fe addition, but the adiabatic temperature rise (ΔTad) of the Gd50Co48Fe2amorphous alloy is comparable to that of the Gd50Co50amorphous alloy, both of which are larger than those of other metallic glasses near the ice point of water. The maximum ΔTadof the Gd50Co48Fe2amorphous ribbon at 277.5 K is about 1.44 K under 1 T, 2.44 K under 2 T, 3.31 K under 3 T, 4.1 K under 4 T and about 4.84 K under 5 T. The large maximum value of ΔTadabove the ice point indicates that the Gd50Co48Fe2amorphous alloy could be an ideal candidate for the high efficient magnetic refrigerant in a household refrigerator.
Original languageEnglish
Pages (from-to)30-33
Number of pages4
JournalJournal of Non-Crystalline Solids
Volume464
DOIs
Publication statusPublished - 15 May 2017

Keywords

  • Adiabatic temperature rise
  • Element substitution
  • Magneto-caloric effect
  • Metallic amorphous alloy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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