抄録
Dielectric dispersion in the low frequency range (1mHz-1MHz) was investigated for the (CaSr) (TiZr) O3 system fired in a reducing atmosphere. The effects of composition, firing conditions and microstructure on dielectric dispersion at low frequencies were investigated using thermally stimulated current (TSC), dc electrical conductivity and dielectric loss (tan δ) spectroscopy measurements. The activation energy obtained from the relaxation time, dc electrical conductivity and thermally stimulated current (TSC) was 0.9eV in each case. The dielectric dispersion in the low frequency range was considered to be due to electrons excited from oxygen vacancies.
