Abstract
The electrical conductivity (σ) and dielectric constant (ε) measurements on pressed pellets of calcium fluoride at 10 4 Hz have been reported in the temperature range from 570 to 1000 K. In the temperature range investigated the conductivity data exhibits two activated regions yielding activation energies of 0.95 and 0.62 eV for regions I and II respectively. The effect of temperature (570–1000 K) on dielectric constant of CaF 2 shows a slow increase of ε upto 650 K, and a fast increase above this temperature, which may be attributed to lattice expansion and polarizability of constituent ions. In the present study it has been found that in the reported temperature range the dielectric constant and dielectric loss are predominantly determined by the motion of defects. The activation energy deduced from the dielectric studies is in good agreement with that obtained from the present electrical conductivity measurements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
