Enhanced d₃₃ value of Bi_0.5Na_0.5TiO₃-(Ba_0.85Ca_0.15)(Ti_0.90Zr_0.10)O₃ lead-free ceramics

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• 作者：Qian Gou ; Jiagang Wu ; ^{msewujg@scu.edu.cn} ; ^{wujiagang0208@163.com} ; Anqi Li ; Bo Wu ; Dingquan Xiao ; Jianguo Zhu
• 关键词：Lead-free piezoelectric ceramics ; Bi0.5Na0.5TiO3 ; (Ba ; Ca)(Ti ; Zr)O3 ; Piezoelectric properties
• 刊名：Journal of Alloys and Compounds
• 出版年：2012
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：25 April, 2012
• 卷：521
• 期：Complete
• 页码：4-7
• 文件大小：739 K

摘要

(1 鈭?#xA0;x)Bi_0.5Na_0.5TiO₃-x(Ba_0.85Ca_0.15)(Ti_0.90Zr_0.10)O₃ [(1 鈭?#xA0;x)BNT-xBCTZ] lead-free piezoelectric ceramics were prepared by a conventional solid reaction method. A stable solid solution is well formed between BNT and BCTZ. The 蓻_r increases, and the T_m, T_d, and the density slightly decrease with increasing BCTZ content. Moreover, the d₃₃ value of (1 鈭?#xA0;x)BNT-xBCTZ ceramics with x = 0.06 demonstrates a temperature independence and a poling electric field dependence. (1 鈭?#xA0;x)BNT-xBCTZ ceramics with x = 0.06 exhibit an optimum electrical behavior: d₃₃ 鈭?#xA0;158 pC/N, k_p 鈭?#xA0;31.2%, and 蓻_r 鈭?#xA0;1165, which is much better than that of pure BNT ceramic. As a result, (1 鈭?#xA0;x)BNT-xBCTZ ceramics are a promising candidate material for the piezoelectric device.