Abstract
Cu substituted nickel-zinc ferrites with composition Ni0.2CuxZn0.8-xFe2O4 (x = 0 to 0.8) were developed with the technique of citrate-gel method. Rietveld analysis confirmed Fd-3m space grouped cubic spinel structure of single phase. Dislocation density (⍴) and packing factor percentage (%) of samples under study increase with increased Cu composition. The fine and uniform structure was confirmed from the studies of morphology index. Measurements on electrical resistivity were taken up by using the two-probe method at high temperatures. Arrhenius plots confirm an increase in observed resistivity (Ω) of ferrite samples with a temperature increase. The energy of activation in the ferromagnetic region (EF) is less when compared to that of the paramagnetic region (EP). The hopping mechanism decreases Curie temperature, while the activation energy of hopping increases with an increase in Cu substitution. Mobility of charge carriers and temperature are inversely correlated.
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.
