High piezoelectricity in CuO-modified Ba(Ti_0.90Sn_0.10)O₃ lead-free ceramics with modulated phase structure

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• 作者：Lei Zhao^a ; ^b ; Bo-Ping Zhang^a ; ^{bpzhang@ustb.edu.cn} ; Ning Wang^a ; Jian-Yin Chen^a
• 关键词：Lead-free piezoceramics ; Phase structure ; Piezoelectric properties ; CuO
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：37
• 期：4
• 页码：1411-1419
• 全文大小：3417 K
• 卷排序：37

文摘

High piezoelectricity was achieved in Ba(Ti0.90Sn0.10)O3 lead-free ceramics by optimizing CuO addition and sintering temperature. The phase structure of 1.0 mol% CuO-doped Ba(Ti0.90Sn0.10)O3 ceramic is coexisting rhombohedral and tetragonal phases as sintered at 1300 °C. The coexistence of rhombohedral, tetragonal and orthorhombic phases appears in 1.0 mol% CuO-doped Ba(Ti0.90Sn0.10)O3 ceramics as sintered at 1350–1450 °C, which leads to highly enhanced d33 up to 650pC/N. This work demonstrates that high piezoelectric property (d33 = 650pC/N) can be obtained in BaTiO3-based lead-free piezoceramics with a simple composition modification by modulating phase structures, which also indicates that Ba(Ti,Sn)O3 is a promising candidate to replace the lead-based piezoceramics.