Electrical Properties of Textured (Bi1/2K1/2)TiO3-BaTiO3 Lead-Free Piezoelectric Ceramics

被引：21

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 | 2009年 / 48卷 / 07期

关键词：

TEMPLATED GRAIN-GROWTH; TITANATE NA1/2BI1/2TIO3-BATIO3 CERAMICS; MICROSTRUCTURE DEVELOPMENT; FERROELECTRIC CERAMICS; TEMPERATURE; FORMULATION;

D O I：

10.1143/JJAP.48.07GA04

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electrical properties of (1 - x)(Bi1/2K1/2)TiO3-xBaTiO(3) (BKT-BT100x) ceramics prepared by an ordinary solid-state reaction and a reactive templated grain growth (RTGG) method using platelike Bi4Ti3O12 particles as a template were investigated. The degree of orientation, F, which was determined by the Lotgering method using an X-ray diffraction pattern, achieved approximate to 83% in the textured BKT-BT10 ceramic. A textured BKT-BT10 ceramic with a homogeneous microstructure was obtained after a long sintering time. The field-induced strains and piezoelectric properties of the BKT-BT10 ceramic were improved by improving grain orientation. In particular, the piezoelectric strain constant, d(33), and the normalized strain, d(33)*, of the textured BKT-BT10 ceramic in the direction parallel (//) to the tape stacking direction were 121 pC/N and 211 pm/V (at 80 kV/cm), respectively. (C) 2009 The Japan Society of Applied Physics

引用

页数：4

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