Effect of Ni substitution on the formability and magnetic properties of Gd_(50)Co_(50) amorphous alloy |
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| Authors: | Ben-Zheng Tang Xiao-Ping Liu Dong-Mei Li Peng Yu Lei Xia |
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| Affiliation: | (Chongqing Key Laboratory of Photo-Electric Functional Materials,College of Physics and Electronic Engineering,Chongqing Normal University,Chongqing 401331,China;Laboratory for Microstructure&Institute of Materials,Shanghai University,Shanghai 200072,China) |
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| Abstract: | A small amount of Ni was added into the binary Gd_(50)Co_(50) amorphous alloy to replace Gd in order to obtain ternary Co_(50)Gd_(50-x)Ni_x(x = 1, 2, and 3) amorphous alloys. Compared to the binary Gd_(50)Co_(50) amorphous alloy, the Co_(50)Gd_(50-x)Ni_x amorphous alloys show an enhanced Curie temperature(T_C) with a weakened formability. The maximum magnetic entropy change(-?S_m~(peak)) of the Co_(50)Gd_(50-x)Ni_x amorphous alloys is found to decrease with the increasing T_C.The adiabatic temperature rise(?T_(ad)) of the Co_(50)Gd_(47)Ni_3 amorphous alloy is superior to that of the Fe-based metallic glasses at room temperature. The variation of the T_C and -?S_~(peak) of the Gd_(50)Co_(50) amorphous alloy with Ni addition, and the mechanism involved, were discussed. |
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