Dielectric and piezoelectric properties of iron-doped 0.57Pb(Sc1/2Nb1/2)O3-0.43PbTiO3 were investigated. The maximum dielectric constant (ε33/ε0 = 2551) and the minimum dielectric loss (tanδ = 0.51%) at room temperature were obtained at 0.1 wt% and 0.3 wt% of Fe2O3 additions, respectively. The temperature dependence of the dielectric constant was measured between 20°C and 350°C. With the additions of Fe2O3, the piezoelectric constant d33 and electromechanical coupling factor kp were slightly decreased, but the mechanical quality factor Qm was significantly increased. The highest mechanical quality factor (Qm=297) was obtained at 0.3 wt% Fe2O3, which is 4.4 times larger than that of non-doped 0.57PSN-0.43PT ceramics.
|Original language||English (US)|
|Journal||Journal of the Korean Physical Society|
|Issue number||3 SUPPL.|
|State||Published - Dec 1 1998|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)