Structure defects of icosahedral quasicrystals as electrically active centres

By dilatometric experiments on rapidly quenched quasicrystalline Al–Cu–Fe, in the course of their annealing it is proposed that icosahedral (I-) phases with free carriers of different signs (either electrons or holes) have different senses of the volume changes upon ordering. The effect discovered s...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2004-03, Vol.334 (Complete), p.380-383
Main Authors: Prekul, A.F., Kuzmin, N.Yu, Shchegolikhina, N.I.
Format: Article
Language:English
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Summary:By dilatometric experiments on rapidly quenched quasicrystalline Al–Cu–Fe, in the course of their annealing it is proposed that icosahedral (I-) phases with free carriers of different signs (either electrons or holes) have different senses of the volume changes upon ordering. The effect discovered serves as a direct experimental support that the structural defects in I-quasicrystals are electrically active centers. This circumstance allows the identification of intrinsic and extrinsic properties of I-phases and opens novel opportunities for understanding the physical properties of real quasicrystals.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2003.12.007