Effect of Nd substitution on the microstructure and electrical properties of Bi7Ti4NbO21 piezoceramics
Effect of Nd substitution on the microstructure and electrical properties of Bi7Ti4NbO21 piezoceramics
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Nd替代对Bi7Ti4NbO21压电陶瓷微观结构和电学性能的影响
DOI：
10.1016/j.jeurceramsoc.2012.04.048
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发表时间：
2012-11
影响因子：
5.7
通讯作者：
Li, Yongxiang
中科院分区：
文献类型：
--
作者：
Shao, Changwei;Lu, Yiqing;Wang, Dong;Li, Yongxiang
采用固相法合成了掺钕铋共生层状结构铁电化合物Bi 7 − xNdxTi 4 NbO 21（x=0，0.5，0.75，1.0，1.25，1.5，1.75和2.0）。研究了Nd 3+取代Bi 3+对化合物晶格、微结构和电学性能的影响。X射线衍射和拉曼散射分析表明，这些化合物发生了从正交相到赝四方相的相变，这与Nd ~（3+）取代Bi ~（3+）的比例和位置有关。随着Nd 3+掺杂量的增加，沿a-b面沿着生长的板状晶粒和晶间二次金属Bi相的生长受到抑制，导致烧结温度、致密度和电阻率的提高。当x=1.25时，压电系数d33达到16.3pC/N，居里温度TC在750°C以上。
Neodymium (Nd) doped intergrowth bismuth layer-structured ferroelectric compounds Bi7−xNdxTi4NbO21(x=0, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75 and 2.0) were synthesized through a solid-state method. The influence of the Nd3+substitution of Bi3+on the lattice, microstructure and electrical properties of these compounds were investigated. The X-ray diffraction and Raman scattering analyses demonstrate that a phase transition from orthorhombic to pseudo-tetragonal occurs in these compounds, relying on substitution proportions and sites of Nd3+for Bi3+. With the increasing Nd3+dopants, the growth of plate-like grains along the a–b plane and a secondary intergranular metallic Bi phase were retarded which resulted in the increases of sintering temperature, density and electrical resistance of the doped ceramics. The resultant ceramic with x=1.25 possesses a piezoelectric coefficient d33up to 16.3pC/N with a Curie temperature TCabove 750°C were obtained for the compound.
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影响因子：
9.4
作者：
J. Xing;H. Gu;A. Gloter;Hui-xian Shen;X. Pan;P. L. Wang
通讯作者：
J. Xing;H. Gu;A. Gloter;Hui-xian Shen;X. Pan;P. L. Wang
影响因子：
3.2
作者：
Hongtao Zhang;Haixue Yan;M. Reece
通讯作者：
Hongtao Zhang;Haixue Yan;M. Reece
影响因子：
5.7
作者：
Y. Kan;Guo‐Jun Zhang;Pei-ling Wang;Yi-bing Cheng
通讯作者：
Y. Kan;Guo‐Jun Zhang;Pei-ling Wang;Yi-bing Cheng
影响因子：
4.9
作者：
Qian Yafeng;Xiao-juan Wang;Jun Zhu;Mao Xiangy;Xiao-bing Chen
通讯作者：
Qian Yafeng;Xiao-juan Wang;Jun Zhu;Mao Xiangy;Xiao-bing Chen
DOI：
10.1016/j.jeurceramsoc.2005.03.125
发表时间：
2005-01-01
影响因子：
5.7
作者：
Takenaka, T;Nagata, H
通讯作者：
Nagata, H