engleski

Anisotropic Physical Properties of Complex Metallic Alloys

Anisotropic physical properties (magnetic susceptibility, electrical resistivity, thermoelectric power, Hall coefficient and thermal conductivity) of the Y-phase Al-Ni-Co, o-Al13Co4 and Al4(Cr, Fe) complex metallic alloys were studied experimentally and theoretically. The investigated compounds belong to the class of decagonal approximant phases with stacked-layer crystallographic structure and show increasing structural complexity and the unit cell size. For the Y-Al-Ni-Co and o-Al13Co4, the anisotropic electronic transport coefficients were reproduced theoretically by an ab-initio calculation using Boltzmann transport theory and the calculated anisotropic Fermi surface, whereas the non-metallic anisotropic electrical resistivity of Al4(Cr, Fe) was analyzed using the theory of slow charge carriers.

complex metallic alloys, transport properties, anisotropy

Two paragraphs of the third chapters, paragraphs 3.4 and 3.7 have been published as an original work in the scinetific journal Croat. Chem. Acta 83 (1) (2010) 75-80. This work was supported by the 6th Framework EU Network of Excellence 'Complex Metallic Alloys' (Contract No. NMP3-CT-2005-500140)