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Table-like magnetocaloric effect and enhanced refrigerant capacity in crystalline Gd₅₅Co₃₅Mn₁₀ alloy melt spun ribbons

Authors:	HY Mo XC Zhong DL Jiao ZW Liu H Zhang WQ Qiu RV Ramanujan

Institution:	1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;2. School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore;3. Singapore-HUJ Alliance for Research and Enterprise (SHARE), Nanomaterials for Energy and Energy-Water Nexus (NEW), Campus for Research Excellence and Technological Enterprise (CREATE), Singapore 138602, Singapore

Abstract:	Gd₅₅Co₃₅Mn₁₀ ribbons were prepared by melt-spinning and subsequent crystallization treatment. Crystallization resulted in the precipitation of the Gd₃Co-type and Gd₁₂Co₇-type phases in the amorphous matrix. Under a magnetic field change of 0–5 T, a table-like magnetocaloric effect, with a maximum magnetic entropy change ${(? Δ S_{M})}^{\max}$ of $5.46 J {kg}^{? 1} K^{? 1}$ in the temperature range of 137–180 K and enhanced refrigerant capacity (RC) of $536.4 J {kg}^{? 1}$ , was achieved in Gd₅₅Co₃₅Mn₁₀ ribbons crystallized at 600 K for 30 min. The table-like ${(? Δ S_{M})}^{\max}$ feature and enhanced RC values make Gd₅₅Co₃₅Mn₁₀ crystallized ribbons promising for Ericsson-cycle magnetic refrigeration in the temperature range from 137 to 180 K.

Keywords:	Magnetocaloric effect Magnetic refrigeration Table-like magnetic entropy change
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