Transport properties of semiconducting GaxIn1-xSb solid solutions

摘要

The electrical conductivity, Hall coefficient and Thermoelectric power of well-sintered pellets of semiconducting Ga$-x$/In$-1$MIN@x$/Sb solid solutions (x $EQ 0, 0.2, 0.5, 0.6, 0.8 and 1) were determined in the temperature range 300 - 425 K. Magnetic studies have also been conducted on powder samples over a similar temperature range. The variation of dc electrical conductivity with temperature was found to be in accordance with the Seto's model. Solid solutions with x $EQ 0.5 and 0.6 have been found to show the Hall effect sign anomaly. Various kinds of scattering mechanisms under different temperature ranges have been observed in different solid solutions. The magnetic susceptibility values of all solid solutions were found to be negative and diamagnetic throughout the temperature range investigated. The Van Vleck paramagnetic susceptibilities have been calculated for GaSb and InSb in the temperature range 300 - 450 K with the help of the bond-orbital model.