Improving ferroelectric and piezoelectric properties of PbFe1/4Sc1/4Nb1/2O3 ceramics by oxide doping prepared via a B-site oxide mixing route
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Abstract
Abstract Oxide-doped PbFe 1/4 Sc 1/4 Nb 1/2 O 3 (PFSN) ceramics were prepared by the conventional ceramic processing via a B-site oxide mixing route. The oxide-doped PFSN ceramics exhibit pure rhombohedral perovskite structure and high relative density. Due to the MnO 2 and Li 2 CO 3 doping, the synthesized ceramics exhibit improved dielectric property, and excellent ferroelectric and piezoelectric properties, which can be attributed to a charge compensation mechanism where donor defects are generated by different ionization paths. The values of remnant polarization P r , electromechanical coupling coefficient K p and piezoelectric constant d 33 of the MnO 2 - and Li 2 CO 3 -doped PFSN ceramics are 16.35 μC/cm 2 , 0.232 and 112.7 pC/N, and 29.22 μC/cm 2 , 0.241 and 112.5 pC/N, respectively. Therefore, oxide doping is an efficient method to improve dielectric, ferroelectric and piezoelectric properties of the PFSN-based ferroelectric ceramics.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Multiferroics and related materials · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
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