A generalized rule for large piezoelectric response in perovskite oxide ceramics and its application for design of lead-free compositions

被引：22

作者：

Ahn, Cheol-Woo ^{[1
]}

Maurya, Deepam ^{[1
]}

Park, Chee-Sung ^{[1
]}

Nahm, Sahn ^{[2
]}

Priya, Shashank ^{[1
]}

机构：

[1] Virginia Tech, Ctr Energy Harvesting Mat & Syst Mat Sci & Engn, Blacksburg, VA 24061 USA

[2] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 11期

基金：

美国国家科学基金会;

关键词：

B-SITE IONS; MICROSTRUCTURE; TEMPERATURE; PZT; MNO2;

D O I：

10.1063/1.3142442

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a general rule for the perovskite oxide ceramics: "A large piezoelectric constant in ABO(3) perovskite ceramics can be obtained by tuning the weight ratio of A and B sites, WA/WB or WB/WA, to 3. Piezoelectric constant decreases significantly when WA/WB or WB/WA is in the range of 0.5-2.0, termed as forbidden zone." A comparative analysis was conducted for broad range of materials demonstrating the applicability of proposed rule. Further based on this rule optimized compositions in BaTiO3 and alkali niobate based systems were developed. Polycrystalline ceramics in modified BaTiO3 system were found to exhibit longitudinal piezoelectric coefficient (d(33)) of 330 pC/N, while alkali niobate ceramics showed d(33) of 294 pC/N. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3142442]

引用

页数：6

共 29 条

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