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Primitive icosahedral quasicrystals in ZnMgLi(Dy, Ho, Er, Tm) systems
Ireneusz Buganski1, Stanislav Vrtnik2, Radoslaw Strzalka1
1Faculty of Physics and Applied Computer Science, AGH University of Krakow, Al. Mickiewicza 30, Krakow, 30-059, Poland.
Abstract:
New quasicrystals with rare-earth elements and Li are synthesized with the self-flux method. The starting composition involves 62.8 at.% Zn, 28.6 at.% Mg, 3.6 at. % rare-earth and 5% Li. Alternatively, 66 at.% Zn, 24.8 at.% Mg, 3.9 at.% rare-earth and 5.3% Li can be used. Both syntheses result in quasicrystals exhibiting differences in the quasilattice constant which is additionally correlated with the size of the rare-earth atom. Monocrystal X-ray diffraction reveals that Li substitutes the rare-earth element found in the center of the Tsai cluster. The substitution of Li for the rare-earth element not only changes the electron-to-atom ratio but also changes the distribution of magnetic-moment-bearing elements which can affect magnetic properties.
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