Abstract
Conduction and dielectric behavior of solid solutions were studied. The temperature dependence of the dc conductivity with obtained, indicated a variable-range hopping mechanism. A low-frequency dielectric relaxation was also observed. The activation energy for the variable-range hopping conduction is slightly higher than that for dielectric relaxation, suggesting that the dielectric relaxation is due to the trap-controlled ac conduction.
- Received 9 December 1997
DOI:https://doi.org/10.1103/PhysRevB.57.11858
©1998 American Physical Society