Abstract
In this study, the electrical conductivity of undoped nanocrystalline thin films of cerium dioxide was studied by impedance spectroscopy in the temperature range from room temperature to in different atmospheres. Two types of films were studied: sample 1, a strongly oriented columnar film (thickness ); and sample 4, a less oriented thick film. Except in one case, the impedance response of thin films, incorporated in the multilayer structure, consisted of a single relaxation time. Conductivity and dielectric properties of both types of films were derived from an equivalent circuit consisting of a resistance in parallel with a constant phase element. The conductivity of thin films was thermally activated with activation energies from , and did not depend on the type of film. The absolute value of conductivity of the less oriented film (sample 4) was found to be two to three orders of magnitude higher than that of the highly oriented film (sample 1).
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 call
