Croatica Chemica Acta, Vol. 83 No. 1, 2010.
Original scientific paper
The Generalization of the Kinetic Equations and the Spectral Conductivity Function to Anisotropic Systems: Case T-Al72.5Mn21.5Fe6 Complex Metallic Alloy
Petar Popčević
; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Ivo Batistić
orcid.org/0000-0003-2292-3407
; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10000 Zagreb, Croatia
Eduard Tutiš
; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Kristijan Velebit
; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Marc Heggen
; Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany
Michael Feuerbacher
; Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany
Abstract
Electrical conductivity, σ, and thermoelectric power, S, of the monocrystalline T-Al72.5Mn21.5Fe6complex metallic alloy have been investigated in the temperature range from 2 to 300 K. The crystallographic-direction-dependent measurements were performed along the [0 0 1], [0 1 0] and [1 0 0]directions of the orthorhombic unit cell, where the stacking direction is along the [0 1 0] direction. The electrical conductivity exhibits a very small anisotropy, and in all directions shows the non-metallic behaviour with square root, √T, temperature behaviour and finite value in the T = 0 limit. Spectral conductivity function, σS(E), constructed out of measurements, reflects anisotropy of the experimental data and indicate non-analytic square root like singularity at Fermi level. Asymmetry of the spectral conductivity function has been extracted from the thermoelectric power data.
Keywords
spectral conductivity function; anisotropic systems; transport coefficients; complex metallic alloys; Taylor phases
Hrčak ID:
52242
URI
Publication date:
30.4.2010.
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