Enhanced dielectric and piezoelectric properties of BZT–BCT system near MPB

Temperature-dependent R-curve behavior of the lead-free ferroelectric 0.615Ba(Zr0.2Ti0.8)O3–0.385(Ba0.7Ca0.3)TiO3 ceramic

“…1a). Similar average grain sizes and densities were found in previous investigations [21,24,44,45]. The SEM micrograph of the fracture surface shows an exclusively transgranular fracture (Fig.…”

Thermally-stable high energy storage performances and large electrocaloric effect over a broad temperature span in lead-free BCZT ceramic

“…The weight loss in the range 520-770 K is associated with the thermal decomposition of different organic compounds, and aer 770 K, the weight loss remained constant. More interestingly, the absence of weight loss above 770 K was attributed to the formation and crystallization of BCZT perovskite phase, as reported previously, 27,[38][39][40][41][42] and the low total weight loss (6.12%) in the BCZT powder indicates that the BCZT perovskite phase was formed at low-temperature (160 C). 37 Therefore, the synthesis temperature of BCZT powders can be decreased to a low temperature of 160 C, which is about 1200 C lower when compared with the solid-state reaction, and 840 C lower when compared with solgel methods.…”

Towards Lead-Free Piezoceramics: Facing a Synthesis Challenge

“…The sintering parameters are important factors which determine the grain size and then the compound properties: temperature, dwell time [78], soaking time [79], and process [80]. Several authors proposed an optimal sintering temperature at 1400–1450 °C for obtain better piezoelectric properties, W. Li reports a BCZT with d 33 = 387 pC/N [81].…”