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Volume 14
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10.3390/met14080880
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Magnetocaloric Properties of Melt-Extracted Medium Entropy Gd33Co33Al34 Microfibers

by
Ning Zhang
1,
Hongxian Shen
1,2,*,
Lin Luo
1,
Jingshun Liu
3,
Zijian Zhao
1,
Lunyong Zhang
1,*,
Jianfei Sun
1 and
Manh-Huong Phan
2,*
1
National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China
2
Department of Physics, University of South Florida, Tampa, FL 33620, USA
3
School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
*
Authors to whom correspondence should be addressed.
Metals 2024, 14(8), 880; https://doi.org/10.3390/met14080880 (registering DOI)
Submission received: 2 June 2024 / Revised: 11 July 2024 / Accepted: 20 July 2024 / Published: 30 July 2024
(This article belongs to the Special Issue Microstructural, Mechanical and Magnetic Properties of Metallic Microwires)
Versions Notes

Abstract

In this paper, a new medium entropy alloy with nominal composition of Gd33Co33Al34 was designed and fabricated into microfibers by a melt-extraction method. The microstructure, thermophysical parameters, and magnetocaloric properties of the obtained fibers were systematically analyzed. The results showed that the as-cast fibers show an amorphous matrix with embedded in situ nano crystals. The fibers show a good magnetocaloric effect with the maximum magnetic entropy change of ~6 J/kg·K for a field change of 5 T. Notably, the fibers show excellent cooling efficiencies with an RCP and RC of ~611.72 and ~487.38 J/kg, respectively. Though the as-cast fibers possess an amorphous/nanocrystal bi-phase structure, they still exhibit a second-order transition near a Curie temperature of ~96 K. Our findings provide a promising pathway towards developing new magnetocaloric materials with good magnetocaloric performances.
Keywords: magnetocaloric properties; medium entropy; amorphous; melt-extracted microfibers magnetocaloric properties; medium entropy; amorphous; melt-extracted microfibers

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MDPI and ACS Style

Zhang, N.; Shen, H.; Luo, L.; Liu, J.; Zhao, Z.; Zhang, L.; Sun, J.; Phan, M.-H. Magnetocaloric Properties of Melt-Extracted Medium Entropy Gd33Co33Al34 Microfibers. Metals 2024, 14, 880. https://doi.org/10.3390/met14080880

AMA Style

Zhang N, Shen H, Luo L, Liu J, Zhao Z, Zhang L, Sun J, Phan M-H. Magnetocaloric Properties of Melt-Extracted Medium Entropy Gd33Co33Al34 Microfibers. Metals. 2024; 14(8):880. https://doi.org/10.3390/met14080880

Chicago/Turabian Style

Zhang, Ning, Hongxian Shen, Lin Luo, Jingshun Liu, Zijian Zhao, Lunyong Zhang, Jianfei Sun, and Manh-Huong Phan. 2024. "Magnetocaloric Properties of Melt-Extracted Medium Entropy Gd33Co33Al34 Microfibers" Metals 14, no. 8: 880. https://doi.org/10.3390/met14080880

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