Abstract
Nanocrystalline nickel oxide (NiO) having an average particle size of 2–3 nm was prepared through a wet chemical route. The electrical properties of pellets of the nanoparticles were studied as a function of the frequency of the applied AC signal and temperature. The article presents a qualitative discussion of the various relaxation processes active in the grain interior and grain boundary of the nanocrystalline NiO as inferred from the analysis of the AC electrical response in ρ ∗ and ε ∗ planes. The time constants for both the relaxation processes exhibit a distribution in values and their temperature dependence is markedly different from each other. The high values of ε′ and ε″ at low frequencies is attributed to the possible dielectric amplification due to the presence of conducting grain boundaries covering insulating grains.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.