Optimization of electrooptic and pieozoelectric coupling effects in tetragonal relaxor-PT ferroelectric single crystals

JOURNAL OF ALLOYS AND COMPOUNDS

卷:640

Article

Sun, Enwei¹  Sang, Shijing¹  Yuan, Zhongyuan¹  Qi, Xudong¹  Zhang, Rui¹  Cao, Wenwu^1,2 

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

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

关键词: Electrooptic;    Piezoelectric;    Coupling effect;    PMN-PT;    PZN-PT;   

DOI  :  10.1016/j.jallcom.2015.04.006

来源: Elsevier

【 摘 要 】

The electrooptic and piezoelectric coupling effects in tetragonal relaxor-based ferroelectric 0.62Pb (Mg1/3Nb2/3)O-3-0.38PbTiO(3) (PMN-0.38PT) and 0.88Pb(Zn1/3Nb2/3)O-3-0.12PbTiO(3) (PZN-0.12PT) single-domain crystals have been analyzed by the coordinate transformation. The orientation dependence of the electrooptic and half-wave voltage was calculated based on the full sets of refractive indices, electrooptic and piezoelectric coefficients. The optimum orientation cuts for achieving the best electrooptic coefficient and half-wave voltage were found. The lowset half-wave voltage is only 76 V for the PMN-0.38PT single-domain crystal. Compared to commonly used electrooptic crystal LiNbO3, tetragonal relaxor-PT ferroelectric single-domain crystals are much superior for optical modulation applications because of their much higher linear electrooptic coefficients and substantially lower half-wave voltages when the piezoelectric strain influence is considered. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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