Le Tran Uyen Tu, Le Dai Vuong, Trinh Ngoc Dat, Vo Thanh Tung
{"title":"CuO掺杂对无铅（K0.41Na0.59）（Nb0.84Sb0.06Ta0.10）O3陶瓷烧结性能和压电性能的影响","authors":"Le Tran Uyen Tu, Le Dai Vuong, Trinh Ngoc Dat, Vo Thanh Tung","doi":"10.1007/s00339-025-08336-x","DOIUrl":null,"url":null,"abstract":"<div><p>(K<sub>0.41</sub>Na<sub>0.59</sub>)(Nb<sub>0.84</sub>Sb<sub>0.06</sub>Ta<sub>0.10</sub>)O<sub>3</sub> + <i>x</i> wt% CuO (KNNST + <i>x</i> Cu, 0 ≤ <i>x</i> ≤ 0.1) ceramics were prepared using a two-step sintering technique. The effects of CuO on the sintering behavior, the phase structure, surface morphologies, and the piezoelectric properties of the (K<sub>0.41</sub>Na<sub>0.59</sub>)(Nb<sub>0.84</sub>Sb<sub>0.06</sub>Ta<sub>0.10</sub>)O<sub>3</sub> (KNNST) ceramics were investigated in details. The experimental results showed that CuO doping improved the “hardened” KNNST + <i>x</i> Cu ceramics through reduced dielectric loss (tanδ) and greatly enhanced mechanical quality factor (<i>Q</i><sub>m</sub>). Additionally, CuO doping significantly improved the piezoelectric properties at low sintering temperatures. The KNNST ceramics obtained excellent overall electrical properties of <i>d</i><sub>33</sub> = 265 pC/N, <i>k</i><sub>p</sub> = 0.50, <i>k</i><sub>p</sub> = 0.41, <i>Q</i><sub>m</sub> = 420, <i>ε</i><sub>r</sub> = 1173, tan<i>δ</i> = 0.015, <i>P</i><sub>r</sub> = 15 µC/cm<sup>2</sup>, and <i>T</i><sub>m</sub> = 325 °C at a sintering temperature of 1050 °C and 0.075 wt% CuO content, which showed that KNNST ceramics were promising candidates for power applications. Besides, CuO content of 0.1 wt% had the highest recoverable energy storage density (<i>W</i><sub>rec</sub>) of 0.34 J/cm<sup>3</sup> and energy storage efficiency (<i>η</i>) of 61.0%, expanding the scope of application for CuO-doped KNNST ceramics.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of CuO doping on the sintering behavior and piezoelectric properties of lead-free (K0.41Na0.59)(Nb0.84Sb0.06Ta0.10)O3 ceramics\",\"authors\":\"Le Tran Uyen Tu, Le Dai Vuong, Trinh Ngoc Dat, Vo Thanh Tung\",\"doi\":\"10.1007/s00339-025-08336-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>(K<sub>0.41</sub>Na<sub>0.59</sub>)(Nb<sub>0.84</sub>Sb<sub>0.06</sub>Ta<sub>0.10</sub>)O<sub>3</sub> + <i>x</i> wt% CuO (KNNST + <i>x</i> Cu, 0 ≤ <i>x</i> ≤ 0.1) ceramics were prepared using a two-step sintering technique. The effects of CuO on the sintering behavior, the phase structure, surface morphologies, and the piezoelectric properties of the (K<sub>0.41</sub>Na<sub>0.59</sub>)(Nb<sub>0.84</sub>Sb<sub>0.06</sub>Ta<sub>0.10</sub>)O<sub>3</sub> (KNNST) ceramics were investigated in details. The experimental results showed that CuO doping improved the “hardened” KNNST + <i>x</i> Cu ceramics through reduced dielectric loss (tanδ) and greatly enhanced mechanical quality factor (<i>Q</i><sub>m</sub>). Additionally, CuO doping significantly improved the piezoelectric properties at low sintering temperatures. The KNNST ceramics obtained excellent overall electrical properties of <i>d</i><sub>33</sub> = 265 pC/N, <i>k</i><sub>p</sub> = 0.50, <i>k</i><sub>p</sub> = 0.41, <i>Q</i><sub>m</sub> = 420, <i>ε</i><sub>r</sub> = 1173, tan<i>δ</i> = 0.015, <i>P</i><sub>r</sub> = 15 µC/cm<sup>2</sup>, and <i>T</i><sub>m</sub> = 325 °C at a sintering temperature of 1050 °C and 0.075 wt% CuO content, which showed that KNNST ceramics were promising candidates for power applications. Besides, CuO content of 0.1 wt% had the highest recoverable energy storage density (<i>W</i><sub>rec</sub>) of 0.34 J/cm<sup>3</sup> and energy storage efficiency (<i>η</i>) of 61.0%, expanding the scope of application for CuO-doped KNNST ceramics.</p></div>\",\"PeriodicalId\":473,\"journal\":{\"name\":\"Applied Physics A\",\"volume\":\"131 3\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-02-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics A\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00339-025-08336-x\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics A","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00339-025-08336-x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effects of CuO doping on the sintering behavior and piezoelectric properties of lead-free (K0.41Na0.59)(Nb0.84Sb0.06Ta0.10)O3 ceramics
(K0.41Na0.59)(Nb0.84Sb0.06Ta0.10)O3 + x wt% CuO (KNNST + x Cu, 0 ≤ x ≤ 0.1) ceramics were prepared using a two-step sintering technique. The effects of CuO on the sintering behavior, the phase structure, surface morphologies, and the piezoelectric properties of the (K0.41Na0.59)(Nb0.84Sb0.06Ta0.10)O3 (KNNST) ceramics were investigated in details. The experimental results showed that CuO doping improved the “hardened” KNNST + x Cu ceramics through reduced dielectric loss (tanδ) and greatly enhanced mechanical quality factor (Qm). Additionally, CuO doping significantly improved the piezoelectric properties at low sintering temperatures. The KNNST ceramics obtained excellent overall electrical properties of d33 = 265 pC/N, kp = 0.50, kp = 0.41, Qm = 420, εr = 1173, tanδ = 0.015, Pr = 15 µC/cm2, and Tm = 325 °C at a sintering temperature of 1050 °C and 0.075 wt% CuO content, which showed that KNNST ceramics were promising candidates for power applications. Besides, CuO content of 0.1 wt% had the highest recoverable energy storage density (Wrec) of 0.34 J/cm3 and energy storage efficiency (η) of 61.0%, expanding the scope of application for CuO-doped KNNST ceramics.
期刊介绍：
Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.
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