Effects of CuO doping on the sintering behavior and piezoelectric properties of lead-free (K0.41Na0.59)(Nb0.84Sb0.06Ta0.10)O3 ceramics

IF 2.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Applied Physics A Pub Date : 2025-02-18 DOI:10.1007/s00339-025-08336-x

Le Tran Uyen Tu, Le Dai Vuong, Trinh Ngoc Dat, Vo Thanh Tung

{"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>(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.</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}

引用次数: 0

Abstract

(K_0.41Na_0.59)(Nb_0.84Sb_0.06Ta_0.10)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 (K_0.41Na_0.59)(Nb_0.84Sb_0.06Ta_0.10)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 (Q_m). 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, k_p = 0.50, k_p = 0.41, Q_m = 420, ε_r = 1173, tanδ = 0.015, P_r = 15 µC/cm², and T_m = 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 (W_rec) of 0.34 J/cm³ and energy storage efficiency (η) of 61.0%, expanding the scope of application for CuO-doped KNNST ceramics.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

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

采用两步烧结法制备了（K0.41Na0.59）（Nb0.84Sb0.06Ta0.10）O3 + x wt% CuO （KNNST + x Cu, 0≤x≤0.1）陶瓷。研究了CuO对（K0.41Na0.59）（Nb0.84Sb0.06Ta0.10）O3 （KNNST）陶瓷烧结性能、相结构、表面形貌和压电性能的影响。实验结果表明，CuO掺杂通过降低介质损耗（tanδ）和提高机械质量因子（Qm），改善了KNNST + x Cu陶瓷的“硬化”。此外，在低烧结温度下，CuO掺杂显著改善了材料的压电性能。在烧结温度为1050℃，CuO含量为0.075 wt%的条件下，KNNST陶瓷的整体电学性能为d33 = 265 pC/N, kp = 0.50, kp = 0.41, Qm = 420, εr = 1173, tanδ = 0.015, Pr = 15µC/cm2, Tm = 325℃，表明KNNST陶瓷具有良好的电力应用前景。此外，当CuO含量为0.1 wt%时，可回收储能密度（Wrec）为0.34 J/cm3，储能效率（η）为61.0%，拓展了掺杂CuO的KNNST陶瓷的应用范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Applied Physics A 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.40%

发文量

964

审稿时长

38 days

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.