Materials design and characterization of (Bi1/2Na1/2)TiO3-Bi(B′,B")O3 ceramics

被引：3
|
作者：
Oshima, Yumiko [1 ]
Kitanaka, Yuuki [1 ]
Noguchi, Yuji [1 ]
Miyayama, Masaru [1 ]
机构：
[1] Univ Tokyo, Res Ctr Adv Sci Technol, Meguro Ku, Tokyo 1538505, Japan
来源：
ELECTROCERAMICS IN JAPAN XIII | 2010年 / 445卷
关键词：
ferroelectric; bismuth sodium titanate (BNT); first-principles calculations; ceramics; CRYSTAL-STRUCTURE;
D O I：
10.4028/www.scientific.net/KEM.445.59
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
0.995(Bi1/2Na1/2)TiO3-0.005Bi(B',B '')O-3 solid-solution ceramics (B',B '' denote Zn, Mg, Ni, Ti, Nb) were fabricated and their ferroelectric properties were investigated. Based on the structural characteristics of Bi(B',B '')O-3 analyzed by first-principles calculations, a materials design for obtaining a large piezoelectric strain is proposed: an index Z=P-s.(epsilon(33)*.s(33))(1/2) where P-s is spontaneous polarization, epsilon(33)* is relative permittivity and s(33) is elastic compliance. A positive correlation was observed between Z and effective piezoelectric constant d(33)* observed for strain measurements.
引用
收藏
页码：59 / 62
页数：4
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