HIGHLY FACETED GROWTH SHAPE OF MICROVOIDS IN ICOSAHEDRAL AL-MN-PD

Authors
BEELI C GODECKE T LUCK R
Citation
C. Beeli et al., HIGHLY FACETED GROWTH SHAPE OF MICROVOIDS IN ICOSAHEDRAL AL-MN-PD, Philosophical magazine letters (Print), 78(5), 1998, pp. 339-348
Citations number
30
Categorie Soggetti
Physics, Condensed Matter
Journal title
Philosophical magazine letters (Print) → ACNP
ISSN journal
09500839
Volume
78
Issue
5
Year of publication
1998
Pages
339 - 348
Database
ISI
SICI code
0950-0839(1998)78:5<339:HFGSOM>2.0.ZU;2-9
Abstract
Faceted microholes in icosahedral Al-Mn-Pd quasicrystals form by conde nsation of thermal vacancies; typically during annealing in the temper ature range above approximately 700 degrees C. Prolonged annealing at temperatures between 750 and 830 degrees C leads to the growth of larg e and highly faceted microholes through a classical Ostwald ripening p rocess. The indexing of all facets of such a microhole is presented. T he idealized morphology is found to correspond to an icosahedral polyh edron with 302 facets.