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

doi:10.1016/j.jnoncrysol.2017.03.016

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 publication › Journal article › Academic research › peer-review

18 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 language	English
Pages (from-to)	30-33
Number of pages	4
Journal	Journal of Non-Crystalline Solids
Volume	464
DOIs	https://doi.org/10.1016/j.jnoncrysol.2017.03.016
Publication status	Published - 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

More information

10.1016/j.jnoncrysol.2017.03.016

http://hdl.handle.net/10397/70679

Cite this

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

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.",

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AU - Tang, B. Z.

AU - Guo, D. Q.

AU - Ding, D.

AU - Xia, L.

AU - Chan, Kang Cheung

PY - 2017/5/15

Y1 - 2017/5/15

N2 - 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.

AB - 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.

KW - Adiabatic temperature rise

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KW - Magneto-caloric effect

KW - Metallic amorphous alloy

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