A small amount of Ni was added into the binary Gd50Co50 amorphous alloy to replace Gd in order to obtain ternary Co50Gd50-xNx(x=1,2,and 3)amorphous alloys.Compared to the binary Gd50Co50 amorphous alloy,the Co50Gd50-x...A small amount of Ni was added into the binary Gd50Co50 amorphous alloy to replace Gd in order to obtain ternary Co50Gd50-xNx(x=1,2,and 3)amorphous alloys.Compared to the binary Gd50Co50 amorphous alloy,the Co50Gd50-xNx amorphous alloys show an enhanced Curie temperature(TC)with a weakened formability.The maximum magnetic entropy change(-Δ^Smpeak)of the Co50Gd50-xNx amorphous alloys is found to decrease with the increasing TC.The adiabatic temperature rise(ΔTad)of the Co50Gd47Ni3 amorphous alloy is superior to that of the Fe-based metallic glasses at room temperature.The variation of the TC and-Δ^Smpeak of the Gd50Co50 amorphous alloy with Ni addition,and the mechanism involved,were discussed.展开更多
Outstanding magneto-calorie properties of a Gd60Ni37Co3 amorphous alloy are reported. The magnetic entropy change peak（-△Sm^peak）near the Curie temperature （Tc=135 K） of the amorphous alloy under 5 T is about 10....Outstanding magneto-calorie properties of a Gd60Ni37Co3 amorphous alloy are reported. The magnetic entropy change peak（-△Sm^peak）near the Curie temperature （Tc=135 K） of the amorphous alloy under 5 T is about 10.42J·kg^-1K^-1 and the refrigeration capacity （RC） under 5 T is about 860J·kg^-1, both of which are almost the highest among the amorphous alloys with Tc above I00 K. The magneto-caloric behaviors and the mechanism for the rather high magneto-caloric effect of the Gd6oNi37Co3 metallic glass are investigated.展开更多
基金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)the Key Project of Science and Technology Research Program of Chongqing Education Commission of China(Grant No.KJZD-K201900501).
文摘A small amount of Ni was added into the binary Gd50Co50 amorphous alloy to replace Gd in order to obtain ternary Co50Gd50-xNx(x=1,2,and 3)amorphous alloys.Compared to the binary Gd50Co50 amorphous alloy,the Co50Gd50-xNx amorphous alloys show an enhanced Curie temperature(TC)with a weakened formability.The maximum magnetic entropy change(-Δ^Smpeak)of the Co50Gd50-xNx amorphous alloys is found to decrease with the increasing TC.The adiabatic temperature rise(ΔTad)of the Co50Gd47Ni3 amorphous alloy is superior to that of the Fe-based metallic glasses at room temperature.The variation of the TC and-Δ^Smpeak of the Gd50Co50 amorphous alloy with Ni addition,and the mechanism involved,were discussed.
基金Supported by the National Natural Science Foundation of China under Grant Nos 51271103 and 51671119
文摘Outstanding magneto-calorie properties of a Gd60Ni37Co3 amorphous alloy are reported. The magnetic entropy change peak（-△Sm^peak）near the Curie temperature （Tc=135 K） of the amorphous alloy under 5 T is about 10.42J·kg^-1K^-1 and the refrigeration capacity （RC） under 5 T is about 860J·kg^-1, both of which are almost the highest among the amorphous alloys with Tc above I00 K. The magneto-caloric behaviors and the mechanism for the rather high magneto-caloric effect of the Gd6oNi37Co3 metallic glass are investigated.
