Abstract
The solubility limit of Cr2O3 into Pb(Zr-Ti)O3 was determined as about 2.2 mole % of ½Cr2O3. In a region out of the limit, three phases were found; the perovskite-type solid solution, the baddeleyite-type ZrO2 and 2PbO·CrO3. By additions of Cr2O3 within the limit, the tetragonality or the difference of rhombohedral angle from π/2 is decreased, and the Curie point is lowered. The temperature, bias and aging characteristics of the piezoelectric ceramics with Cr additives were measured. The temperature coefficient of frequency constant decreases with Cr concentration. The addition of Cr2O3 decreases the dielectric and elastic anisotropies, and increases the coercive field. The remanent electrostriction if notably large compared with that in the plain Pb(Zr-Ti)O3 ceramics. The back-rotation of 90°-rotated domains with time tends to play a significant role in the ceramics with Cr additives, and this is considered as one of the reasons for the improved time stability in this system.
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 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.
