Abstract
The 0.8Pb(Zr0.48Ti0.52)O3 – 0.125Pb(Zn1/3Nb2/3)O3 – 0.075Pb(Mn1/3Nb2/3)O3 + x wt% Fe2O3 ceramics (PZT-PZN-PMnN), where x = 0 ÷ 0.35, has been prepared by two-stage calcination method. The effect of Fe2O3 content on the crystal structure and electrical properties of ceramics has been investigated. The results of X-ray diffraction (XRD) show that all samples have pure perovskite phase with tetragonal structure, the c/a ratio increases with increasing Fe2O3 content. At x = 0.25, electrical properties of ceramics are best: the density (r) of 7.86 g/cm3, the electromechanical coupling factor (kp) of 0.64, the dielectric constant (εr) of 1400, the dielectric loss (tand) of 0.003, the mechanical quality factor (Qm) of 1450, the piezoelectric constant (d31) of 155 pC/N, and the remanent polarization (Pr) of 37 μC/cm2, which makes it as a promising material for high power piezoelectric devices.
Highlights
Relaxor ferroelectric materials have the high dielectric constant, broad ferroelectric-paraelectric transition and strong frequency dependence of dielectric properties [1] [2]
We found that the electromechanical coupling factor, the piezoelectric constant (d31) and the mechanical quality factor (Qm) of the ceramics are enhanced with the increase of Zr/Ti ratio
We have investigated the effect of Fe2O3 addition on structure and electrical properties of 0.8Pb(Zr0.48Ti0.52) – 0.125Pb(Zn1/3Nb2/3) – 0.075Pb(Mn1/3Nb2/3)O3 ceramics
Summary
Relaxor ferroelectric materials have the high dielectric constant, broad ferroelectric-paraelectric transition (the diffuse phase transition) and strong frequency dependence of dielectric properties [1] [2]. The addition of small amounts of such relaxor materials was found to be beneficial for the electrical properties of PZT-based ceramics due to the formation of fine and uniform rhombohedral domains along tetragonal. How to cite this paper: Vuong, L.D. and Gio, P.D. (2014) Structure and Electrical Properties of Fe2O3-Doped PZT-PZN-PMnN Ceramics. It was observed that both the dielectric and piezoelectric properties of these PZT-relaxor materials are strongly influenced by the addition of other additives such as La, ZnO, CuO, MnO2 and Fe2O3 [2] [4] [6]-[8]. The effects of Fe2O3 on PZT and PZT-based ternary ceramics have been studied [7]-[10]. The effect of Fe2O3 addition on the quaternary PZT-PZN-PMnN was scarcely reported
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
