Mensur Alkoy E.Berksoy A.2024-07-122024-07-1220109.78142E+1210.1109/ISAF.2010.57122202-s2.0-79953050452https://dx.doi.org/10.1109/ISAF.2010.5712220https://hdl.handle.net/20.500.12415/91542010 IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2010, Co-located with the 10th European Conference on the Applications of Polar Dielectrics, ECAPD 2010 -- 9 August 2010 through 12 August 2010 -- Edinburgh, Scotland -- 84328In this study, effects of copper oxide addition and lithium modification on the properties of potassium sodium niobate (K0.5Na 0.5)NbO3 - KNN ceramics were investigated. XRD phase analysis showed that all samples crystallized in pure perovskite phase. CuO addition and Li modification was found to enhance densification of KNN samples. CuO addition was found to lead to higher coupling coefficient (kp) and mechanical quality factor (Qm), whereas Li modification caused an increase in dielectric constant and piezoelectric charge coefficient (d 33), and stabilization of the tetragonal phase below room temperature. © 2010 IEEE.eninfo:eu-repo/semantics/closedAccessElectrical propertiesLead-freePiezoelectricsPotassium niobateConference Object