Fabrication and Piezoelectric Properties of Grain-Oriented (Bi1/2K1/2)TiO3-BaTiO3 Ceramics

被引：32

作者：

Nemoto, Masahiro ^{[1
]}

Hiruma, Yuji ^{[1
]}

Nagata, Hajime ^{[1
]}

Takenaka, Tadashi ^{[1
]}

机构：

[1] Tokyo Univ Sci, Fac Sci & Technol, Dept Elect Engn, Chiba 2788510, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 05期

关键词：

lead-free; bismuth potassium titanate; piezoelectric properties; dielectric properties; reactive templated grain growth; grain orientation;

D O I：

10.1143/JJAP.47.3829

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The piezoelectric properties of (1-x)(Bi1/2K1/2)TiO3-BaTiO3 (x = 0.1) [abbreviated as BKT-BT10] ceramics prepared by ordinary solid-state reaction and reactive templated grain growth (RTGG) using platelike Bi4Ti3O12 particles as a template were investigated. All samples showed a single-phase perovskite structure, and relative densities compared with theoretical densities were all higher than 95%. The degree of orientation F was determined by the Lotgering method using an X-ray diffraction (XRD) pattern. The F values of textured BKT-BT10 ceramics were relatively low at similar to 35%. However, field-induced strains and piezoelectric properties of BKT-BT10 ceramics were improved by grain orientation. In particular, the piezoelectric strain constant d(33) and the strain of textured BKT-BT10 ceramics in a direction parallel (//) to the tape stacking direction were 84.5 pC/N and 168 pm/V (at 80 kV/cm), respectively.

引用

页码：3829 / 3832

页数：4

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