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Medientyp:
E-Artikel
Titel:
Pressure-Induced Amorphization of R -Al 5 Li 3 Cu: A Structural Relation Among Amorphous Metals, Quasi-Crystals, and Curved Space
Beteiligte:
Winters, Robert R.;
Hammack, William S.
Erschienen:
American Association for the Advancement of Science (AAAS), 1993
Erschienen in:Science
Sprache:
Englisch
DOI:
10.1126/science.260.5105.202
ISSN:
0036-8075;
1095-9203
Entstehung:
Anmerkungen:
Beschreibung:
<jats:p>
A central question in the study of amorphous materials is the extent to which they are ordered. When the crystalline intermetallic
<jats:italic>R</jats:italic>
-Al
<jats:sub>5</jats:sub>
Li
<jats:sub>3</jats:sub>
Cu 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.
</jats:p>