Formation of an icosahedral quasicrystal in the Mg-Al-Pt system

Authors
Koshikawa, N Yoda, S Edagawa, K Takeuchi, S
Citation
N. Koshikawa et al., Formation of an icosahedral quasicrystal in the Mg-Al-Pt system, JPN J A P 2, 40(6B), 2001, pp. L628-L630
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS → ACNP
Volume
40
Issue
6B
Year of publication
2001
Pages
L628 - L630
Database
ISI
SICI code
Abstract
A Frank-Kasper-type (FK-type) icosahedral phase (i-phase) has been found to form in the Mg-Al-Pt system of Mg45Al42Pt13 composition, The i-phase is fo rmed by heating an amorphous phase produced by a melt-spinning technique up to 673 K. We have also investigated the formation of the FK-type i-phase i n the ternary Mg-Al-X (X = Co, Ni, R-h and Au) systems and rind no trace of the FK-type i-phase. The formation criteria for the FK-type i-phase have b een discussed in terms of the electron number in the outer shell, the atomi c size and the electronegativity of the third element in Mg-Al-X.