Abstract
ABSTRACTThe ternary system Sc-Al-Cu system has been investigated in this work. Several alloys with various compositions have been prepared by arc-melting from the elements and studied by X-ray diffraction. An icosahedral quasicrystal of formula ScAl2.4Cu3.2 has been identified using the reciprocal space reconstructed from its diffraction images. The diffraction data collected for several single crystals led to solve and refine five crystal structures: cubic ScAlCu2 (Fmm), hexagonal ScAl1.1Cu0.9 (Pm2), hexagonal ScAl2.4Cu2.9 (P63/mmc), tetragonal ScAl5.3Cu6.7 (I4/mmm) and orthorhombic ScAl2.2Cu3.4 (Cmmm). Almost all these structures are characterised with copper/aluminum atomic mixing at most of the crystallographic sites and the atomic arrangements are favourable to the existence of stoichiometry ranges for the compounds. These results, providing new single crystal data sets for these ternary compounds, clarify and confirm the structures previously reported (from crystal or powder data).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
