Enhanced magnetocaloric performance in nanocrystalline/amorphous Gd3Ni/Gd65Ni35 composite microwires

Y.F. Wang; Y.Y. Yu; H. Belliveau; N.T.M. Duc; H.X. Shen; J.F. Sun; J.S. Liu; F.X. Qin; S.C. Yu; H. Srikanth; M.H. Phan

Journal of Science: Advanced Materials and Devices (Dec 2021)

Enhanced magnetocaloric performance in nanocrystalline/amorphous Gd3Ni/Gd65Ni35 composite microwires

Y.F. Wang,
Y.Y. Yu,
H. Belliveau,
N.T.M. Duc,
H.X. Shen,
J.F. Sun,
J.S. Liu,
F.X. Qin,
S.C. Yu,
H. Srikanth,
M.H. Phan

Affiliations

Y.F. Wang: Institute for Composites Science Innovation (InCSI), School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, PR China; Department of Physics, University of South Florida, Tampa, FL, 33620, USA
Y.Y. Yu: Department of Physics, University of South Florida, Tampa, FL, 33620, USA
H. Belliveau: Department of Physics, University of South Florida, Tampa, FL, 33620, USA
N.T.M. Duc: The University of Danang, University of Science and Education, 459 Ton Duc Thang, Lien Chieu, Danang, Viet Nam; Corresponding author.
H.X. Shen: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China; Corresponding author. Department of Physics, University of South Florida, Tampa, FL, 33620, USA.
J.F. Sun: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China
J.S. Liu: School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, PR China
F.X. Qin: Institute for Composites Science Innovation (InCSI), School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, PR China; Corresponding author.
S.C. Yu: School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan, 44919, South Korea
H. Srikanth: Department of Physics, University of South Florida, Tampa, FL, 33620, USA
M.H. Phan: Department of Physics, University of South Florida, Tampa, FL, 33620, USA; Corresponding author.

Journal volume & issue: Vol. 6, no. 4
pp. 587 – 594

Abstract

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A novel class of nanocrystalline/amorphous Gd3Ni/Gd65Ni35 composite microwires were created directly from melt-extraction through controlled solidification. X-ray diffraction (XRD), transmission electron microscopy (TEM), and selected area electron diffraction (SAED) confirmed the formation of a biphase nanocrystalline/amorphous structure in these wires. Magnetic and magnetocaloric experiments indicate a large magnetic entropy change (-ΔSM ~9.64 J/kg K), large refrigerant capacity (RC ~742.1 J/kg), and large maximum adiabatic temperature change (ΔTadmax~5 K) around the Curie temperature of ~120 K for a field change of 5 T. These values are ~1.5 times larger relative to its bulk counterpart and are superior to other candidate materials being considered for active magnetic refrigeration in the liquid nitrogen temperature range.

Published in Journal of Science: Advanced Materials and Devices

ISSN: 2468-2284 (Print); 2468-2179 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/journal-of-science-advanced-materials-and-devices

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