Study of electrokinetic and magnetic properties of ZrNi1-xRhxSn semiconductive solid solution

L.P. Romaka; Yu.V. Stadnyk; V.A. Romaka; A.M. Horyn; V.Ya. Krayovskyy

doi:10.15330/pcss.19.1.21-28

Authors

L.P. Romaka Ivan Franko National University of Lviv
Yu.V. Stadnyk Ivan Franko National University of Lviv
V.A. Romaka Ya. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics National Academy of Sciences of Ukraine; National University “Lvivska Politechnika”
A.M. Horyn Ivan Franko National University of Lviv
V.Ya. Krayovskyy Lviv Polytechnic National University

DOI:

https://doi.org/10.15330/pcss.19.1.21-28

Keywords:

electric conductivity, thermopower coefficient, Fermi level

Abstract

The features of electrokinetic, energy state and magnetic characteristics of ZrNi_1-_xRh_xSn semiconductive solid solution were investigated in the ranges: T = 80-400 K, x = 0-0.10. It was shown that substitution of Ni atoms (3d⁸4s²) by Rh atoms (4d⁸5s¹) in the structure of ZrNiSn compound generated the structural defects with acceptor nature, and holes became the main charge carriers in the ZrNi_1-_xRh_xSn at low temperature. Based on analysis of the motion rate of the Fermi level Δε_F/Δх in ZrNi_1-_xRh_xSn to the valence band and change of sign of thermopower coefficient from positive to negative it was suggested that the structural defects of acceptor and donor natures were generated simultaneously (donor-acceptor pairs), and deep donor band ɛ_D² was formed.

References

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