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Continuous periodic to quasiperiodic structural transformations in crystalline and superlattice structures

โœ Scribed by U.D. Kulkarni

Book ID
104365141
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
592 KB
Volume
34
Category
Article
ISSN
0960-8974

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โœฆ Synopsis

Attention is focussed on the fact that the J~-Mn, the rr-phase and the AIsTi 3 and the AI,~Ti7 superlattice derivatives of the ~'-AITi phase all belong to a category of structures which comprises an identical periodic arrangement of square and rhombic tiles -the shapes of the rhombic tiles being different in each of these cases. While the first and the second structures constitute periodic approximants of the octagonal and the dodecagonal quasicrystals respectively, the last two (superlattice) structures are the approximants of a hypothetical quasiperiodic superlattice structure. The strip projection method has been used here to model the intermediate structures which arise during the continuous periodic to quasiperiodic transitions between the relevant structures and was found to be quite successful in explaining many of the related experimental findings.

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