Fabrication and Piezoelectric Properties of Grain-Oriented (Bi1/2K1/2)TiO3–BaTiO3 Ceramics
Fabrication and Piezoelectric Properties of Grain-Oriented (Bi1/2K1/2)TiO3–BaTiO3 Ceramics
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DOI：
10.1143/jjap.47.3829
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发表时间：
2008-05
影响因子：
1.5
通讯作者：
M. Nemoto;Y. Hiruma;H. Nagata;T. Takenaka
中科院分区：
文献类型：
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作者：
M. Nemoto;Y. Hiruma;H. Nagata;T. Takenaka
研究了以片状Bi4Ti3O12颗粒为模板，采用普通固相反应和反应型模板晶粒生长（RTGG）法制备的（1 - x）（Bi1/2K1/2） TiO3-xBaTiO3 (x = 0.1)[简称BKT-BT10]陶瓷的压电性能。所有样品均为单相钙钛矿结构，相对密度与理论密度相比均大于95%。通过x射线衍射（XRD）图的Lotgering方法确定了取向度F。织构BKT-BT10陶瓷的F值相对较低，约为35%。晶粒取向提高了BKT-BT10陶瓷的场致应变和压电性能。其中，织构BKT-BT10陶瓷的压电应变常数d33和应变在平行于条带堆叠方向（∥）的方向上分别为84.5 pC/N和168 pm/V （80 kV/cm）。
The piezoelectric properties of (1 - x)(Bi1/2K1/2)TiO3–xBaTiO3 (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 ∼35%. However, field-induced strains and piezoelectric properties of BKT–BT10 ceramics were improved by grain orientation. In particular, the piezoelectric strain constant d33 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.