Effect of Ni substitution on the formability and magnetic properties of Gd50Co50 amorphous alloy

doi:10.1088/1674-1056/ab7da8

Abstract A small amount of Ni was added into the binary Gd₅₀Co₅₀ amorphous alloy to replace Gd in order to obtain ternary Co₅₀Gd_50-xN_x (x= 1, 2, and 3) amorphous alloys. Compared to the binary Gd₅₀Co₅₀ amorphous alloy, the Co₅₀Gd_50-xN_x amorphous alloys show an enhanced Curie temperature (T_C) with a weakened formability. The maximum magnetic entropy change (-ΔS_m^peak) of the Co₅₀Gd_50-xN_x amorphous alloys is found to decrease with the increasing T_C. The adiabatic temperature rise (ΔT_ad) of the Co₅₀Gd₄₇Ni₃ amorphous alloy is superior to that of the Fe-based metallic glasses at room temperature. The variation of the T_C and -ΔS_m^peak of the Gd₅₀Co₅₀ amorphous alloy with Ni addition, and the mechanism involved, were discussed.

Keywords: amorphous alloy glass forming ability magnetocaloric effect adiabatic temperature rise

Received: 10 February 2020
Revised: 25 February 2020
Accepted manuscript online:

PACS:	64.70.pe	(Metallic glasses)
	71.23.Cq	(Amorphous semiconductors, metallic glasses, glasses)
	75.30.Sg	(Magnetocaloric effect, magnetic cooling)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51671119 and 51871139), the Chongqing Research Program of Basic Research and Frontier Technology, China (Grant No. cstc2018jcyjAX0329 and cstc2018jcyjAX0444), and the Key Project of Science and Technology Research Program of Chongqing Education Commission of China (Grant No. KJZD-K201900501).

Corresponding Authors: Peng Yu
E-mail: pengyu@cqnu.edu.cn

Cite this article:

Ben-Zheng Tang(唐本镇), Xiao-Ping Liu(刘晓萍), Dong-Mei Li(李冬梅), Peng Yu(余鹏), Lei Xia(夏雷) Effect of Ni substitution on the formability and magnetic properties of Gd₅₀Co₅₀ amorphous alloy 2020 Chin. Phys. B 29 056401

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Effect of Ni substitution on the formability and magnetic properties of Gd50Co50 amorphous alloy

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Effect of Ni substitution on the formability and magnetic properties of Gd₅₀Co₅₀ amorphous alloy