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Ivkov, Jovica; Stanic, Denis; Popčević, Petar; Smontara, Ana; Dolinšek, Janez and Gille, Peter (2010): Hall effect in the crystalline Orthorombic o-Al13Co4 Approximant to the decagonal Quasicrystals [Hallov efekt v kristaliničnem ortorombičnem približku o-Al13Co4 dekagonalnim kvazikristalom]. In: Materiali in Tehnologije, Vol. 44, No. 1: pp. 9-12

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We have investigated the anisotropic Hall effect of the o-Al13Co4 orthorhombic approximant to the decagonal phase. The crystalline-direction-dependent measurements were performed along the a, b and c directions of the orthorhombic unit cell. The Hall effect has been measured for all the combinations of the electrical current and magnetic field directions. The Hall coefficients RH change with the crystallographic direction from negative electron-like or zero to positive hole-like for different combinations of the current and field directions. The results for the anisotropy of RH is well correlated with the anisotropy of RH in the d-Al-Ni-Co and d-Al-Cu-Co quasicrystals. The Hall coefficients of the o-Al13Co4 phase were compared to the literature data on single crystals of the Al76Co22Ni2 and the Al80Cr15Fe5 approximants to the decagonal quasicrystals, allowing a study of the evolution of the Hall coefficient with an increasing structural complexity and unit-cell size.

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