Ultra‐high‐temperature piezoelectric responses and ultra‐high thermal stability of piezoelectricity in ceramic PbZr_0.54Ti_0.46O₃

Abstract

To date, most piezoceramics with a high piezoelectric coefficient (d 33 > 500 pC/N) and a high Curie temperature (T C around 400 • C) are BiScO 3 -PbTiO 3 -based (BS-PT-based) systems, containing the rare-earth element Sc, whose high cost hinders mass production. We investigated the effect of Nddoping on the morphotropic phase boundary and synthesized low-cost Nd-doped PbZr 0.54 Ti 0.46 O 3 (PZT) piezoceramics, achieving high piezoelectric performance. At room temperature, the piezoelectric coefficient d 33 reached 550 pC/N with a T C = 375 • C and this changed by only 3.6% over a broad temperature range (30-260 • C). The d 33 value reached an ultra-high value of 941 pC/N at 345 • C, which is higher than that of a BS-PT-based ceramic (810 pC/N at 350 • C). The developed PZT ceramic material has a superior electrostrictive strain of 0.45% at 40 kV/cm, and a room temperature piezoelectric coefficient d 33 * of 1312 pm/V at 20 kV/cm.Our research provides a new paradigm for designing piezoceramics that can be used over a wide temperature range.

High electric‐field‐induced strain of SnO2‐modified PLSBZT ceramic for actuator applications

“…The domain morphology of the ceramics for x = 0 and 0.55 employing piezoelectric force microscopy is shown in Figure 8. There were many alternating vertical patterns of stripe domains in both samples, suggesting that the domains are typical tetragonal phases 35 . The sample with x = 0.55 had a smaller domain with a size of 139.5 nm than the others with x = 0 (179 nm).…”

“…There were many alternating vertical patterns of stripe domains in both samples, suggesting that the domains are typical tetragonal phases. 35 The sample with x = 0.55 had a smaller domain with a size of 139.5 nm than the others with x = 0 (179 nm). This is also consistent with the domain size conjecture shown in Figure 6A.…”

A simple measurement method for in-situ temperature-dependent piezoelectric coefficient d 33 of piezoelectric materials

“…The traditional method is cumbersome and consumes a long time, and the non-in situ measurement method will affect the accuracy of the measurement due to the difference of d 33 values at different locations of the sample. There are still few research reports on in situ temperature-dependent d 33 measurement of piezoelectric materials until now [14][15][16].…”

Enhanced high‐power performance of Fe‐doped PZMNZT piezoelectric ceramics

“…High‐power piezoelectric ceramics are commonly used in welding, ultrasonic motors, transducers and other fields, 1–3 where piezoelectric ceramics typically operate in high AC electric fields near their resonance frequency ( f r ) or antiresonance frequency ( f a ), thereby producing a high vibration velocity ( v 0 ) 4 . A large piezoelectric coefficient d 33 and electromechanical coupling factor k can efficiently generate high v 0 5 .…”