| Abstract: | Electrical resistivity (ρ) and thermoelectric power (α) measurements were carried out in air on CuCr2-xAlxO4(0.06 ≤ x ≤ 0.10) spinel oxides in the temperature range 300-675 K. Carrier concentration (n), optical phonon frequency (γo), and mobility (μ) values have been calculated from resistivity and thermoelectric power data. The results show that CuCr2-xAlxO4 spinel oxides are compensated semiconductors and the total compensation of the hole carriers by electrons occur when 0.09 chromium ions are replaced by aluminium ions. |
