DIELECTRIC-PROPERTIES AND ELECTRICAL-CONDUCTIVITY STUDIES ON TB3GA5O12

Dielectric constant (epsilon) and dielectric loss (tan delta) of terbi um gallium garnet (Tb3Ga5O12) single crystal have been measured in the frequency range from 100 Hz to 100 kHz and in the temperature range f rom room temperature to 400 degrees C. AC conductivity was calculated from the data on epsilon and tan delta. The room temperature dielectri c constant of the garnet measured at 10(6) Hz is 12.4. The de conducti vity as a function of temperature is also measured. The results are di scussed in the light of the existing data.