Local structure characterization in quasicrystal-forming Zr_(80)Pt_(20) binary amorphous alloy

摘要

The local structure of melt-spun Zr_(80)Pt_(20) alloy was investigated in the amorphous and icosahedral quasicrystal (QC)-formed states by x-ray diffraction and extended x-ray absorption fine structure measurements. While the local environment around the Zr atom in the amorphous state is considerably different from that in the QC-formed state, it remains during the quasicrystallization around the Pt atom. It is suggested that the stable icosahedral local structure is mainly formed in the center of the Pt atom in the amorphous state.