Ordering transformation in icosahedral quasicrystals and related crystalline phases

Mukhopadhyay, NK and Chattopadhay, K and Ranganathan, S (1996) Ordering transformation in icosahedral quasicrystals and related crystalline phases. In: Bulletin of Materials Science, 19 (05). pp. 717-723.

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Abstract

Arcs of diffuse intensity appear in various shapes and positions in the diffraction patterns from the icosahedral phase, violating the parity rule for simple icosahedral (SI) symmetry. In the process of annealing treatment, the diffuse spots also evolve in the centre of the arcs and become sharp. These extra diffuse spots change the symmetry of the quasilattice from P-type to F-type. The ordered and disordered structures in quasicrystal have been linked to the ordered and disordered structures present in the crystalline alpha (Al-Mn-Si) and alpha (Al-Fe-Si) alloys.

Item Type:	Journal Article
Publication:	Bulletin of Materials Science
Publisher:	Springer India, in co-publication with Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Springer India, in co-publication with Indian Academy of Sciences.
Keywords:	Quasicrystals;rational approximants;ordering.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	12 Jan 2010 11:23
Last Modified:	19 Sep 2010 05:27
URI:	http://eprints.iisc.ac.in/id/eprint/19235

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