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

• 来源期刊: 中国物理B（英文版）
• 关键词: amorphous alloy glass forming ability magnetocaloric effect adiabatic temperature rise
• 年，卷（期）: 2020,（5）
• 页码范围: 482-487
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/ab7da8

摘要

A small amount of Ni was added into the binary Gd50Co50 amorphous alloy to replace Gd in order to obtainternary Co50Gd50-xNix (x=1, 2, and 3) amorphous alloys. Compared to the binary Gd50Co50 amorphous alloy, theCo50Gd50-xNix amorphous alloys show an enhanced Curie temperature (TC) with a weakened formability. The maximummagnetic entropy change (-?Speakm ) of the Co50Gd50-xNix amorphous alloys is found to decrease with the increasing TC.The adiabatic temperature rise (?Tad) of the Co50Gd47Ni3 amorphous alloy is superior to that of the Fe-based metallicglasses at room temperature. The variation of the TC and-?Speakm of the Gd50Co50 amorphous alloy with Ni addition, andthe mechanism involved, were discussed.