Influence of domain size on the scaling effects in Pb(Mg1/3Nb2/3)O3-PbTiO3 ferroelectric crystals

SCRIPTA MATERIALIA

卷:64

Article

Lin, Dabin^1,2  Lee, Hyeong Jae¹  Zhang, Shujun¹  Li, Fei^1,2  Li, Zhenrong²  Xu, Zhuo²  Shrout, Thomas R.¹ 

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

[2] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Int Ctr Dielect Res,Educ Minist, Xian 710049, Peoples R China

关键词: Crystalline oxides;    Electrical properties;    Dielectrics;    Piezoelectricity;    Ferroelectricity;   

DOI  :  10.1016/j.scriptamat.2011.03.018

来源: Elsevier

【 摘 要 】

The property degradation observed in thin Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT) crystals is believed to relate to large domains and subsequent clamping induced by the surface boundary. In this work, the properties were investigated as function of domain size, using controlled poling. The degraded piezoelectric and dielectric properties of thin PMN-PT were found to increase significantly with decreasing domain size. Furthermore, the fine domain structure was found to be stable at 3 kV cm(-1) after 7.0 x 10(5) negative-pulse cycles. These properties make PMN-PT crystals suitable for high-frequency (>20 MHz) ultrasound transducers. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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