Abstract
The hydrostatic piezoelectric properties of [011] poled Pb(Mg 1/3Nb2/3)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.
| Original language | English (US) |
|---|---|
| Article number | 032909 |
| Journal | Applied Physics Letters |
| Volume | 104 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jan 20 2014 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)