Achieving tailorable magneto-caloric effect in the Gd-Co binary amorphous alloys

C. Wu; D. Ding; L. Xia; K. C. Chan

doi:10.1063/1.4943506

AIP Advances (Mar 2016)

Achieving tailorable magneto-caloric effect in the Gd-Co binary amorphous alloys

C. Wu,
D. Ding,
L. Xia,
K. C. Chan

Affiliations

C. Wu: Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
D. Ding: Laboratory for Microstructure, Institute of Materials, Shanghai University, Shanghai 200072, China
L. Xia: Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
K. C. Chan: Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong

DOI: https://doi.org/10.1063/1.4943506
Journal volume & issue: Vol. 6, no. 3
pp. 035302 – 035302-6

Abstract

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Tailorable magnetic properties and magneto-caloric effect were achieved in the Gd-Co binary amorphous alloys. It was found that the Curie temperature (Tc) of the GdxCo100-x (x=50, 53, 56, 58, 60) metallic glasses can be tuned by changing the concentration of Gd as Tc =708.8-8.83x, and the mechanism involved was investigated. On the other hand, a linear correlation between the peak value of magnetic entropy change (-Δ Smpeak) and Tc-2/3 is found in the amorphous alloys with a linear correlation coefficients of above 0.992. Therefore, the -ΔSmpeak of the Gd-Co binary amorphous alloys under different magnetic fields can be easily tailored by adjusting the composition of the alloy.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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