Abstract
Effects of oxide additives (Bi2O3, MnO2, La2O3, Sm2O3, SnO2, and Nb2O5) on structure and properties of 0.70Bi1.05FeO3–0.30BaTiO3 ceramics were investigated. Their microstructure and electrical properties were dependent on the types and contents of oxide additives. A large piezoelectric constant (d 33) of 135–200 pC/N together with a high Curie temperature of 454–504 °C can be obtained in the ceramics with R-C phase boundary. Most of oxide additives can induce the formation of saturated P–E loops and butterfly-shaped S–E curves, while a pinched P–E loop and sprout S-E curve were observed in the Nb2O5-modified ceramics due to a completely suppressed ɛ r–T curve and seriously refined grain sizes. There were high bipolar strain values (S = 0.17%) under low driving electric fields for the addition of 0.5%mol Nb2O5. In addition, an enhanced magnetization of M r = 0.018 emu/g was achieved in the ceramics with 1.0% SnO2 due to the structure distortion and the breaking of spin helix structure.
Sign-in/Register to access full text options 
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 callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: 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.
