Pressure-induced Amorphization of R-Al5Li3Cu: A Structural Relation Among Amorphous Metals, Quasi-Crystals, and Curved Space

Science  09 Apr 1993:
Vol. 260, Issue 5105, pp. 202-204
DOI: 10.1126/science.260.5105.202


A central question in the study of amorphous materials is the extent to which they are ordered. When the crystalline intermetallic R-Al5Li3Cu is compressed to 23.2 gigapascals at ambient temperature, an amorphous phase is produced whose order can be described as defects in a curved-space crystal. This result supports a structural relation between quasi-crystals and amorphous metals based on icosahedral ordering. This result also shows that a metallic crystal can be made amorphous by compression.