Abstract
Lead-free piezoelectric 0.97(Bi0.5Na0.5Ti1−xNbx)O3-0.03BaZrO3 (BNT-BZ3) ceramics (x = 0 ~ 0.03) were prepared by a conventional solid-state reaction method. X-ray diffraction patterns revealed the formation of single-phase perovskite structure with x ≤ 0.015. The depolarization temperature and the dielectric constant decreased with increasing Nb content. The remanent polarization (Pr) and the piezoelectric constant (d33) increased from 28 μC/cm2 and 98 pC/N for x = 0 to 31 μC/cm2 and 128 pC/N for x = 0.005, respectively. In addition, the electric field induced strain was enhanced with a maximum value Smax = 0.17% with a normalized piezoelectric coefficient of d*33 = 283 pm/V at an applied electric field of 6 kV/mm for x = 0.015.
| Original language | English |
|---|---|
| Pages (from-to) | 1240-1245 |
| Number of pages | 6 |
| Journal | Journal of the Korean Physical Society |
| Volume | 67 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1 Oct 2015 |
| Externally published | Yes |
Keywords
- BNT
- Field-induced strain
- Lead-free ceramics
- Perovskite structure
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