Karacasulu, LeventAhmetoğlu, Çekdar Vakıf2023-10-032023-10-0320230921-5107https://doi.org/10.1016/j.mseb.2023.116709https://hdl.handle.net/11147/13822Potassium sodium niobate (KNN) ceramics were densified using a multiple-stage sintering process in which initially applied cold sintering process (CSP) was followed by the solid-state sintering between 1100 and 1120 °C. Comparative assessments demonstrated that multi-step sintered samples yielded better properties than conventionally sintering ones. The highest relative density (94.7%) and the best electrical properties were obtained from the sample subjected to cold sintering at 120 °C/1 h using 5 wt% deionized water subsequently heat-treated at 1120 °C/2 h, resulting in a monolithic KNN ceramic having a piezoelectric coefficient of 120 pC/N. © 2023 Elsevier B.V.eninfo:eu-repo/semantics/closedAccessCold sinteringElectrical propertiesPiezoelectricPotassium sodium niobateNiobium compoundsArticle2-s2.0-8516468608510.1016/j.mseb.2023.116709