Original scientific paper

Hall Effect of the Triclinic Al₇₃Mn₂₇ and T-Al₇₃Mn_27–xPd_x (0 ≤ x ≤ 6) Complex Metallic Alloys

Jovica Ivkov ; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Denis Stanić ; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Zvonko Jagličić ; Institute of Mathematics, Physics and Mechanics & Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
Janez Dolinšek ; Jožef Stefan Institute, University of Ljubljana, Jamova 39, SI-1000 Ljubljana, Slovenia
Marc Heggen ; Institut für Festkörperforschung, Forschungszentrum Jülich, Jülich D-52425, Germany
Michael Feuerbacher ; Institut für Festkörperforschung, Forschungszentrum Jülich, Jülich D-52425, Germany

Abstract

The Hall coefficient, R_H, of the triclinic Al₇₃Mn₂₇ and Taylor-phase Al₇₃Mn_27xPd_x (x = 0, 2, 4 and 6) complex metallic alloys has been measured from 90 to 400 K. The Hall coefficients of all the samples are positive and they decrease strongly with the increase of temperature, T. For the separation of the normal, R₀, and anomalous, R_S, Hall coefficient the results for the paramagnetic susceptibility,χ(T), and electrical resistivity, ρ(T), have been used. The well defined linearity of the R_H vs. χ(T)·ρ2(T) plots confirms the assumption that in these materials R_H is dominated by spin-orbit interaction. The values deduced from the R_H vs. χ and R_H vs. χ·ρ2 plots in T­AlMnPd phases, fall between –2 × 10–10 m3 C–1
and 0 for R₀, and are about 5 × 10–7 m3 C–1 for R_S. The values deduced from the R_H vs. χ·ρ2 plots in the triclinic Al₇₃Mn₂₇ alloy are about –15 × 10–10 m3 C–1 for R₀, and about 1.5 × 10–5 m3 C–1 for R_S.

Keywords

complex metallic alloys; Hall effect

Hrčak ID:

52148

URI

https://hrcak.srce.hr/52148

Publication date:

30.4.2010.

Visits: 1.271 *