On the contrary, the local structures around Cu atoms in both Fe 80 Cu 20 and Fe 90 Cu 10 alloys show a transition from fcc to bcc structure.

• 与之相反 ；当x 2 0时 ；Fe原子的近邻配位保持bcc结构而Cu原子的近邻配位结构从fcc转变为bcc结构 .