{"title":"Dielectric and piezoelectric properties of modified (Na, K)NbO3 ceramics substituted with KNbO3","authors":"Sunmin Byenon, Juhyun Yoo","doi":"10.1080/00150193.2013.822776","DOIUrl":null,"url":null,"abstract":"In this study, (1-x)[(Li<sub>0.04</sub>(Na<sub>0.56</sub>K<sub>0.44</sub>)<sub>0.96</sub>(Nb<sub>0.90</sub>Ta<sub>0.10</sub>) <sub>0.998</sub>Zn<sub>0.005</sub>O<sub>3</sub>)]-xKNbO<sub>3</sub> (x = 0 ~ 7.5 mol%) composition ceramics were fabricated by a conventional sintering technique. The influences of KNbO<sub>3</sub> on the dielectric and piezoelectric properties of the ceramics were investigated. Optimum physical properties of piezoelectric constant d<sub>33</sub> = 255 [pC/N], electromechanical coupling factor k<sub>p</sub> = 0.4358, dielectric constant ε<sub>r</sub>= 699, measured density (ρ)= 4.49 [g/cm<sup>3</sup>] were obtained from the composition ceramic with x = 3[mol%]. These results indicate that the (1-x) LNKLNTZ-xKN ceramic is a promising lead-free piezoelectric candidate material for practical applications.","PeriodicalId":20497,"journal":{"name":"Proceedings of ISAF-ECAPD-PFM 2012","volume":"5 1","pages":"1-2"},"PeriodicalIF":0.0000,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of ISAF-ECAPD-PFM 2012","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/00150193.2013.822776","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, (1-x)[(Li0.04(Na0.56K0.44)0.96(Nb0.90Ta0.10) 0.998Zn0.005O3)]-xKNbO3 (x = 0 ~ 7.5 mol%) composition ceramics were fabricated by a conventional sintering technique. The influences of KNbO3 on the dielectric and piezoelectric properties of the ceramics were investigated. Optimum physical properties of piezoelectric constant d33 = 255 [pC/N], electromechanical coupling factor kp = 0.4358, dielectric constant εr= 699, measured density (ρ)= 4.49 [g/cm3] were obtained from the composition ceramic with x = 3[mol%]. These results indicate that the (1-x) LNKLNTZ-xKN ceramic is a promising lead-free piezoelectric candidate material for practical applications.
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