Phase transitions in quasicrystalline Al6CuMg4

Sanyal, M. K. ; Sahni, V. C. ; Dey, G. K. ; Varshney, L. (1987) Phase transitions in quasicrystalline Al6CuMg4 Physical Review B: Condensed Matter and Materials Physics, 36 (4). pp. 2443-2445. ISSN 1098-0121

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Calorimetric and electron diffraction studies reveal that the quasicrystalline-to-crystalline phase transition in Al6CuMg4 is endothermic, in contrast to the exothermic crystallization in quasicrystalline Al-Mn reported earlier. This finding indicates that the stability of certain quasicrystalline phases may be much larger than that of the Al-Mn system. This finding is in agreement with the prediction based on quantum structural diagrams. From a kinetic study the activation energy of this phase transition was found to be 260 kJ/mole.

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Source:Copyright of this article belongs to The American Physical Society.
ID Code:61338
Deposited On:15 Sep 2011 03:41
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