Phase structure and nano-domain in high performance of BaTiO3 piezoelectric ceramics
Phase structure and nano-domain in high performance of BaTiO3 piezoelectric ceramics
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DOI：
10.1016/j.jeurceramsoc.2011.11.014
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发表时间：
2012-05-01
影响因子：
5.7
通讯作者：
Guo, Dong
中科院分区：
文献类型：
--
作者：
Ma, Nan;Zhang, Bo-Ping;Guo, Dong
采用常规烧结技术制备BaTiO3陶瓷，重点研究了烧结温度（1100-1230℃）对晶体结构和压电性能的影响。 XRD图谱表明，随着烧结温度从1160℃升高到1180℃，晶体结构从四方相转变为斜方晶相。BaTiO3陶瓷的斜方晶系样品中的晶畴呈条状和人字形。随着烧结温度的升高，磁畴宽度和磁畴密度增加。 1190℃烧结的BaTiO3陶瓷表现出优异的电性能，分别为d(33)=355pC/N、k(p)=40%、P-r=10.2μC/cm(2)，这归因于晶体结构转变和纳米域的共同贡献。 (C) 2011 Elsevier Ltd. 保留所有权利。
BaTiO3 ceramics were prepared by conventional sintering technique with a special emphasis on the effects of sintering temperature (1100-1230 degrees C) on the crystalline structure and piezoelectric properties. XRD patterns indicated that the crystallographic structure changed from tetragonal phase to orthorhombic one with raising sintering temperature from 1160 degrees C to 1180 degrees C. Domains were shaped in a stripe and a herringbone in orthorhombic samples for BaTiO3 ceramics. The domain width and domain density increased with raising sintering temperature. The BaTiO3 ceramic sintered at 1190 degrees C showed the excellent electrical properties, d(33) = 355 pC/N, k(p) = 40%, P-r = 10.2 mu C/cm(2), respectively, which are originated to the contributions of both the crystallographic structure transition and nano-domain. (C) 2011 Elsevier Ltd. All rights reserved.