Relaxor phenomenon of (1- x )(Ba .85 Ca .15 )(Zr .09 Ti .91 )O 3 - x Ta + 0.6 wt% Li 2 CO 3 ceramics with high piezoelectric constant and Curie temperature
Source abstract
Abstract
Abstract In the work, Ta 2 O 5 doped (Ba .85 Ca .15 )(Zr .09 Ti .91 )O 3 + 0.6 wt% Li 2 CO 3 ceramics were successfully fabricated by the conventional solid state sintering method. Piezoelectric performance of the ceramics was significantly enhanced by doping the tantalum oxide, the optimum properties were obtained at x = 0.04 wt%, ( d 33 ~326 pC/N , k p ~63% and T c ~129 °C, respectively). The T c drastically increased compared with previous results. Besides, the microstructure, dielectric and ferroelectric properties were carefully investigated. The temperature-dependent dielectric performance of the specimens exhibits obvious relaxor phenomenon under various frequencies. The relaxor characteristics and XRD were systematically discussed, which certified that the samples were relaxor ferroelectrics with a small dielectric loss (0.62%) and a large dielectric constant (13693).
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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