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X-ray diffraction study of Al-Mn powder obtained by rapid solidification

Baranidharan, S and Balagurusamy, VSK and Gopal, ESR (1992) X-ray diffraction study of Al-Mn powder obtained by rapid solidification. In: Phase Transitions, A40 (1-4). pp. 67-71.

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Abstract

Al-Mn powder samples were prepared by the gas atomisation technique in search of a possible single grain icosahedral phase. The X-ray diffraction analysis revealed the existence of a τ-phase in addition to the orthorhombic phase and glassy Al-Mn. The τ-phase occurs as single grains and it is a rational approximant structure to icosahedral quasicrystal. This τ-phase shows pseudo icosahedral symmetry. The space group of the τ-phase is I23 and its cell dimension is 14 Å. It transforms, kinetically along with the glassy phase, to stable crystalline form under heating.

Item Type: Journal Article
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 29 Nov 2006
Last Modified: 27 Aug 2008 12:24
URI: http://eprints.iisc.ernet.in/id/eprint/8806

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