Hydrostatic piezoelectric properties of [011] poled Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals and 2-2 lamellar composites

Lili Li; Shujun Zhang; Zhuo Xu; Xuecang Geng; Fei Wen; Jun Luo; Thomas R Shrout

doi:10.1063/1.4862984

Hydrostatic piezoelectric properties of [011] poled Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ single crystals and 2-2 lamellar composites

Appl Phys Lett. 2014 Jan 20;104(3):032909. doi: 10.1063/1.4862984. Epub 2014 Jan 24.

Authors

Lili Li¹, Shujun Zhang², Zhuo Xu³, Xuecang Geng⁴, Fei Wen³, Jun Luo⁵, Thomas R Shrout²

Affiliations

¹ Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA ; Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
² Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
³ Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
⁴ Blatek Inc., 2820 E. College Avenue, Suite F, State College, Pennsylvania 16801, USA.
⁵ TRS Technologies Inc., 2820 E. College Avenue, Suite J, State College, Pennsylvania 16801, USA.

Abstract

The hydrostatic piezoelectric properties of [011] poled Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ (PMN-PT) crystals and corresponding 2-2 crystal/epoxy composites were investigated. The crystal volume ratio and compositional dependencies of the hydrostatic charge and voltage coefficients (d_h and g_h ) and hydrostatic figure of merit (FOM) d_h × g_h were determined, where large FOM value of 3.2 pm²/N with high stability as a function of hydrostatic pressure was achieved for rhombohedral crystal composites. In addition, the stress amplification effects of the face-plate and different epoxy matrixes were investigated, with maximum FOM value being on the order of 92 pm²/N, indicating that 2-2 crystal/epoxy composites are promising materials for hydrostatic applications.

Grants and funding

P41 EB002182/EB/NIBIB NIH HHS/United States