Lead-free barium titanate ceramics with large piezoelectric constant fabricated by microwave sintering

被引:182
作者
Takahashi, H
Numamoto, Y
Tani, J
Matsuta, K
Qiu, JH
Tsurekawa, S
机构
[1] Fuji Ceram Corp, Shizuoka 4180111, Japan
[2] Tohoku Univ, Inst Fluid Sci, Aoba Ku, Sendai, Miyagi 9808577, Japan
[3] Tohoku Univ, Grad Sch Engn, Dept Nanomech, Sendai, Miyagi 9808579, Japan
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2006年 / 45卷 / 1-3期
关键词
BaTiO3; ceramics; hydrothermal synthesized method; microwave sintering; grain size; dielectric property; piezoelectric property; lead-free; electromechanical coupling factor; piezoelectric constant;
D O I
10.1143/JJAP.45.L30
中图分类号
O59 [应用物理学];
学科分类号
摘要
A lead-free barium titanate (BaTiO3) ceramics with a high density and a large piezoelectric constant, d(33), as manufactured at 1320 degrees C by microwave sintering, using a pure fine powder with a particle size of 100 nm produced by hydrothermal synthesis. The density of the ceramic with a 3.4 mu m grain size was more than 98.3% of the theoretical value. The ceramic after poling had a dielectric constant of epsilon(T)(33)/epsilon(0) = 4200, an electromechanical coupling factor planar mode of k(P) = 36% and d(33) = 350 pC/N. The value of d(33) is the largest one ever reported for lead-free BaTiO3 ceramics.
引用
收藏
页码:L30 / L32
页数:3
相关论文
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