Thermal and electrical conductivities in Al-based complex metallic alloys

• Published in: Philosophical magazine (2003. Print) Vol. 88; no. 13-15; pp. 2155 - 2162
• Main Authors: Smiljanić, I., Smontara, A., Bilušić, A., Barišić, N., Stanić, D., Lukatela, J., Dolinšek, J., Feuerbacher, M., Grushko, B.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Abingdon Taylor & Francis Group 01-05-2008; Taylor & Francis
• Subjects: aluminium alloys; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Conductivity of specific materials; Disordered solids; electrical conductivity; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport in condensed matter; Electronic transport in mesoscopic systems; Exact sciences and technology; Physics; Quasicrystals; Semi-periodic solids; Structure of solids and liquids; crystallography; thermal transport; Temperature dependence; Metallic conduction; Aluminium base alloys; Electrical conductivity; Transport properties; Rhodium alloys; Iron alloys; Coexistence; Substructure; Quasicrystals; Unit cell; Silicon oxides; Complex metallic alloy; Thermal conductivity; Transport processes; Cobalt alloys; Heat transfer
• ISSN: 1478-6435; 1478-6443
• DOI: 10.1080/14786430701877359

A study is reported of the heat transport of AlPd(Mn, Fe, Co, Rh) complex metallic alloys that belong to an interesting class of Al-based alloys characterized by giant unit cells with quasicrystal-like cluster substructure. The electrical and thermal conductivity were investigated in the temperature range 8-300 K, in order to see how the exceptional structural complexity and the coexistence of two competing physical length scales affect the transport properties of these materials. The alloys have electrical conductivity typical of metallic alloys, and low thermal conductivity which is at room temperature comparable to that of thermal insulators, e.g. amorphous SiO
2
and Zr/YO
2
ceramics.