| Literature DB >> 24753619 |
Lili Li1, Shujun Zhang2, Zhuo Xu3, Xuecang Geng4, Fei Wen3, Jun Luo5, Thomas R Shrout2.
Abstract
The hydrostatic piezoelectric properties of [011] poled Pb(Mg1/3Nb2/3)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 (dh and gh ) and hydrostatic figure of merit (FOM) dh × gh 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.Entities:
Year: 2014 PMID: 24753619 PMCID: PMC3977785 DOI: 10.1063/1.4862984
Source DB: PubMed Journal: Appl Phys Lett ISSN: 0003-6951 Impact factor: 3.791