The dielectric and piezoelectric properties were investigated in the (1-x)Pb(Hf1-yTiy)O3-xPb(Ni1/3Nb2/3)O3 (PNN-PHT, x=0.05-0.50, y=0.55-0.70) ternary system. The morphotropic phase boundary (MPB) was determined by X-ray powder diffraction analysis. Isothermal map of Curie temperature (TC) related to the compositions in the phase diagram was obtained. The optimum dielectric and piezoelectric properties were achieved in ceramics with the MPB compositions, with the maxima values being on the order of 6000 and 970pC/N, respectively. Rayleigh analysis was used to study the extrinsic contribution (domain wall motion) in PNN-PHT system, where the extrinsic contribution was found to be ~30% for composition 0.49PNN-0.51PHT(30/70), showing a high nonlinearity.
|Original language||English (US)|
|Number of pages||7|
|Journal||Journal of the European Ceramic Society|
|State||Published - Nov 2013|
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry