Phase Transition and Electrical Properties of BiAlO3-Modified (Bi0.5Na0.5)TiO3 Piezoelectric Ceramics

被引：39

作者：

Ullah, Aman ^{[1
]}

Ahn, Chang Won ^{[2
]}

Jang, Ki Bong ^{[1
]}

Hussain, Ali ^{[3
]}

Kim, Ill Won ^{[1
]}

机构：

[1] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea

[2] KETI, Convergence Components R&D Div, Songnam 463816, South Korea

[3] Univ Ulsan, Sch Mat Sci & Eng, Ulsan 680749, South Korea

来源：

FERROELECTRICS | 2010年 / 404卷

关键词：

Lead free ceramics; phase transition; ferroelectric properties; strain;

D O I：

10.1080/00150193.2010.482490

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free piezoelectric (1-x)(Bi0.5Na0.5)TiO3-xBiAlO(3) (BNT-BA, x = 0.00, 0.025, 0.050, 0.075, 0.100) ceramics were synthesized by a conventional solid-state reaction method. The BNT-BA ceramics exhibited enhanced ferroelectric and piezoelectric properties at x = 0.050. The x-ray diffraction analysis revealed a pure perovskite phase for x <= 0.075. A rhombohedral to pseudocubic phase transition was observed at x = 0.075 and maximum values for the electric field-induced strain (S = 0.13%) and dynamic piezoelectric coefficient (d(33)* = 163 pm/V) were obtained at this composition. The enhancement in the electric field-induced strain is attributed to the rhombohedral to pseudocubic phase transition.

引用

页码：167 / 172

页数：6

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