Electromechanical coupling coefficient of 0.70Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 single crystal resonator with arbitrary aspect ratio

被引：11

作者：

Huang, Naixing

Zhang, Rui ^{[1
]}

Cao, Wenwu

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150080, Peoples R China

[2] Daqing Petr Inst, Dept Phys, Daqing 163318, Heilongjiang, Peoples R China

[3] Penn State Univ, China & Mat Res Inst, University Pk, PA 16802 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 12期

基金：

中国国家自然科学基金; 美国国家卫生研究院;

关键词：

D O I：

10.1063/1.2784949

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Based on mode coupling theory and the fundamental energy ratio definition of the electromechanical coupling coefficient, a unified formula has been derived to calculate the effective electromechanical coupling coefficient k(eff) of 0.70Pb(Mg1/3Nb2/3)O-3-0.30PbTiO(3) (PMN-30%PT) ferroelectric single crystal cylindrical resonator with arbitrary aspect ratio. The k(eff) dependence on resonator aspect ratio of PMN-30%PT crystal shows similar characteristics as that of the conventional piezoelectric ceramics Pb(ZrxTi1-x)O-3 (PZT). However, compared to PZT-5 ceramics, PMN-30%PT single crystal has a smaller aspect ratio where the k(eff) changes dramatically and there is also a stronger coupling between thickness and radial modes causing much larger mode splitting.

引用

页数：3

共 9 条

[1]

Berlincourt D. A., 1964, PHYS ACOUSTICS 1, V1, P182

[2] Domain structures and phase transitions of PMNT single crystals [J].