Surface Acoustic Wave Propagation in Relaxor-Based Ferroelectric Single Crystals 0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 Poled along [011]c

被引：5

作者：

Li Xiu-Ming ^{[1
,2
]}

Zhang Rui ^{[1
,2
]}

Huang Nai-Xing ^{[1
]}

Lu Tian-Quan ^{[1
]}

Cao Wen-Wu ^{[1
,3
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Condensed Matter Sci & Technol Inst, Harbin 150080, Peoples R China

[2] Daqing Normal Univ, Phys & Elect Informat Engn Inst, Daqing 163712, Peoples R China

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

来源：

CHINESE PHYSICS LETTERS | 2012年 / 29卷 / 02期

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE;

D O I：

10.1088/0256-307X/29/2/024302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Surface acoustic wave (SAW) propagation in relaxor-based ferroelectric single crystals 0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 (PZN-7% PT) poled along [011](c) has been analyzed theoretically. The results show that PZN-7% PT single crystals have excellent SAW properties, such as low phase velocities, very high electromechanical coupling coefficients and small power flow angles. It is also found that the SAW properties strongly depend on the propagation direction and the characteristic curves of SAW phase velocity, and the electromechanical coupling coefficients are symmetric with respect to theta = 90 degrees. Considering all related factors, the X-cut PZN-7% PT single crystal has the best performance. Based on our results, the X-cut PZN-7% PT single crystals poled along [011](c) are an excellent candidate for ultra-wide bandwidth low-frequency SAW devices.

引用

页数：3

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