Amorphous phases and piezoelectricity in (Na0.5Bi0.5)0.94Ba0.06TiO3-Bi12TiO20 flexoelectric-type nanocomposite ceramics

被引：11
作者：
Zhao, Minglei [1 ]
Wang, Lihai [1 ]
Wang, Chunlei [1 ,2 ]
Zhang, Jialiang [1 ,2 ]
Gai, Zhigang [1 ]
Wang, Chunming [1 ,2 ]
Li, Jichao [1 ]
机构：
[1] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China
[2] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
来源：
SCRIPTA MATERIALIA | 2010年 / 63卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ceramics; Nanostructured materials; Piezoelectricity; Interfaces; PYROELECTRIC GLASS-CERAMICS; FERROELECTRICITY; SUPERLATTICES; POLARIZATION; ENHANCEMENT; TITANATE; BATIO3; SRTIO3;
D O I：
10.1016/j.scriptamat.2010.03.057
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
(Na0.5Bi0.5)(0.94)Ba0.06TiO3-Bi12TiO20 composite ceramics, which display macroscopic interfaces and have a net macroscopic polarization, were fabricated by an ordinary sintering technique. All the coarse grains were found to have nano-networked surfaces, implying a relatively high content of amorphous phases in this kind of ceramic. Because these interface-related amorphous phases are distributed non-homogeneously throughout the ceramic, we propose that the macroscopic polarization is due to partial alignment of the distorted TiO6 octahedra and the distorted BiO5 polyhedra in the amorphous phases. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：207 / 210
页数：4
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