Research Article
Ultrahigh Performance Piezoelectric Energy Harvester Using Lead-Free Piezoceramics with Large Electromechanical Coupling Factor
Table 1
Various parameters of the untextured KN(N
1-zS
z)-BAZ-SZ piezoelectric ceramics (
) obtained from the Rietveld refinement.
| | Sb | Phase structure | Phase fraction (%) | Lattice parameters | (%) | (%) | | | a () | b () | c () | , , |
| | 0.00 | O-T | 90.5 (Amm2) | 3.9605 (2) | 5.6525 (3) | 5.6568 (3) | ° | 4.47 | 5.85 | 5.08 | | 9.5 (P4mm) | 3.9737 (3) | 3.9737 (3) | 3.9751 (3) | ° | | | |
| | 0.01 | R-O-T | 8.0 (R3m; H) | 5.6511 (7) | 5.6511 (7) | 6.9644 (17) | °, ° | 4.26 | 5.75 | 4.10 | | 79.7 (Amm2) | 3.9625 (3) | 5.6463 (4) | 5.6495 (4) | ° | | | | | 12.3 (P4mm) | 3.9699 (4) | 3.9699 (4) | 3.9793 (4) | ° | | | |
| | 0.03 | R-O-T | 20.7 (R3m; H) | 5.6285 (5) | 5.6285 (5) | 6.9083 (12) | °, ° | 4.43 | 6.17 | 4.16 | | 62.0 (Amm2) | 3.9620 (3) | 5.6393 (4) | 5.6425 (4) | ° | | | | | 17.3 (P4mm) | 3.9699 (4) | 3.9699 (4) | 3.9793 (4) | ° | | | |
| | 0.05 | R-O-T | 30.6 (R3m; H) | 5.6250 (3) | 5.6250 (3) | 6.8997 (7) | °, ° | 4.29 | 5.82 | 3.67 | | 45.0 (Amm2) | 3.9649 (3) | 5.6385 (4) | 5.6416 (4) | ° | | | | | 24.4 (P4mm) | 3.9718 (3) | 3.9718 (3) | 3.9812 (3) | ° | | | |
| | 0.06 | R-O-T | 33.2 (R3m; H) | 5.6254 (2) | 5.6254 (2) | 6.9006 (5) | °, ° | 4.23 | 5.61 | 3.70 | | 34.1 (Amm2) | 3.9696 (3) | 5.6396 (3) | 5.6428 (3) | ° | | | | | 32.7 (P4mm) | 3.9748 (2) | 3.9748 (2) | 3.9842 (2) | ° | | | |
| | 0.08 | R-O-T | 38.8 (R3m; H) | 5.6250 (1) | 5.6250 (1) | 6.8996 (3) | °, ° | 4.29 | 5.71 | 4.00 | | 16.2 (Amm2) | 3.9689 (3) | 5.6375 (3) | 5.6406 (3) | ° | | | | | 45.0 (P4mm) | 3.9756 (1) | 3.9756 (1) | 3.9850 (1) | ° | | | |
|
|
