Structures and Properties of Pb(Zr0.5Ti0.5)O3−Pb(Zn1/3Nb2/3)O3− Pb(Ni1/3Nb2/3)O3 Ceramics for Energy Harvesting Devices |
| |
| Authors: | Dewang Yuan Ying Yang Querui Hu Yiping Wang |
| |
| Affiliation: | 1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, , Nanjing, 210016 China;2. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, , Nanjing, 210016 China |
| |
| Abstract: | Piezoelectric ceramics with large energy density coefficient d33·g33 value have been found suitable for piezoelectric energy harvesting applications. In this study, the phase structures and piezoelectric properties of xPb(Zr0.5Ti0.5)O3?yPb(Zn1/3Nb2/3)O3?(1?x?y)Pb(Ni1/3Nb2/3)O3 (xPZT?yPZN?(1?x?y)PNN) ceramic were investigated with systematically varying PZN and PNN components. The ternary phase diagram of PZT?PZN?PNN system was illustrated and the composition region of morphotropic phase boundary (MPB) was determined. Piezoelectric and dielectric measurements verify that the materials in MPB region all present large d33 and d33·g33 values. In particular, very high d33·g33 coefficients of 20162.2 × 10?15 m2/N and 21026.3 × 10?15 m2/N are observed from samples 0.75PZT?0.15PZN?0.1PNN and 0.8PZT?0.05PZN?0.15PNN with compositions located on the rhombohedral phase side near MPB because the dielectric coefficient ε33T/ε0 decreases faster than the d33 coefficient at this side. |
| |
| Keywords: | |
|
|
