J. Ryu, Jong‐Jin Choi, B. Hahn, Dong-Soo Park, W. Yoon
{"title":"Effect of K1.94Zn1.06Ta5.19O15 Addition on the Sintering Behaviors and Piezoelectric Properties of (K0.5Na0.5) NbO3 Ceramics","authors":"J. Ryu, Jong‐Jin Choi, B. Hahn, Dong-Soo Park, W. Yoon","doi":"10.1109/ISAF.2007.4393369","DOIUrl":null,"url":null,"abstract":"The effect of K<sub>1.94</sub>Zn<sub>1.06</sub>Ta<sub>5.19</sub>O<sub>15</sub> addition on the sintering behavior and piezoelectric properties in lead-free, piezoelectric ceramics of (K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3</sub> was investigated. The apparent density of sintered KNN ceramics was increased with KZT addition, and a relative density of above 96.5% was obtained with the doping of over 0.5 mol% KZT. The maximum dielectric and piezoelectric properties of epsiv<sub>T</sub> <sup>3</sup>/epsiv<sub>0</sub> = 590, d<sub>33</sub> = 126 pC/N, k<sub>p</sub> = 0.42, and P<sub>r</sub> = 18 muC/cm<sup>3</sup> were obtained from 0.5 mol% KZT-doped KNN ceramics. A small amount of KZT (~0.5 mol%) was effective for improving the sintering behavior and piezoelectric properties, but KZT addition exceeding 1.0 mol% was only effective for densification.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"197 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.2007.4393369","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
The effect of K1.94Zn1.06Ta5.19O15 addition on the sintering behavior and piezoelectric properties in lead-free, piezoelectric ceramics of (K0.5Na0.5)NbO3 was investigated. The apparent density of sintered KNN ceramics was increased with KZT addition, and a relative density of above 96.5% was obtained with the doping of over 0.5 mol% KZT. The maximum dielectric and piezoelectric properties of epsivT3/epsiv0 = 590, d33 = 126 pC/N, kp = 0.42, and Pr = 18 muC/cm3 were obtained from 0.5 mol% KZT-doped KNN ceramics. A small amount of KZT (~0.5 mol%) was effective for improving the sintering behavior and piezoelectric properties, but KZT addition exceeding 1.0 mol% was only effective for densification.
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