Discontinuous switching in antiferroelectric ceramics monitored by acoustic emissions

Abstract

Articles you may be interested inElectric field induced metastable ferroelectric phase and its behavior in (Pb, La)(Zr, Sn, Ti)O3 antiferroelectric single crystal near morphotropic phase boundary Appl. Phys. Lett.Enhanced antiferroelectric and electric-induced pyroelectric properties of Mn-substitued (Pb0.832Ba0.138La0.02)(Zr0.7Ti0.05Sn0.25)O3 ceramics Appl.Acoustic emission patterns were monitored during electric-field-induced antiferroelectric to ferroelectric phase transitions for fine-and coarse-grained antiferroelectric lead lanthanum zirconate stannate titanate ceramics ͓Pb 0.97 La 0.02 ͑Zr 0.77 Sn 0.14 Ti 0.09 ͒O 3 ͔. For the initial phase-transition cycle, acoustic emissions were detected just before and right after the major strain changes. During subsequent cycles, the strain response becomes jumplike and associated with additional acoustic emissions. Acoustic emissions before strain changes are assigned to domain nucleation and those at high fields to domain jumps, nucleation-annihilation processes, or microcracking. The intermediate ones are associated with defect charge rearrangement within the material. Backswitching generates acoustic emissions in the fine-grained material but only for certain drive conditions in the coarse-grained ceramic. Implications for domain nucleation processes, strain, and the role of defects in antiferroelectrics are discussed.

Electric Fatigue in Ferroelectric Lead Zirconate Stannate Titanate Ceramics Prepared by Spark Plasma Sintering

“…The variations of the polarization and strain hysteresis loops of SPS samples compared with the CS ones in the present report are consistent with the results for lead titanate (PT) prepared by SPS and CS 3 . The weaker response of polarization and strain to electric field was also reported for SPS submicron‐sized AFE samples as compared with CS specimens 9,10 . The SPS AFE material also shows a diffuse transition from the AFE to the FE state, as indicated by the polarization and strain hysteresis loops 9 .…”

“…Most of the previous investigations on SPS materials were mainly focused on dielectric properties rather than polarization and strain hysteresis loops, which are important characteristics regarding their application as memories and actuators. Both types of hysteresis loops were reported for SPS AFE PZST ceramics in comparison with those of CS materials 8–10 . Furthermore, electric fatigue in both kinds of materials was investigated 9,11 .…”

A comprehensive review on the progress of lead zirconate-based antiferroelectric materials

“…Solid-state reaction route is the conventional way to prepare bulk ceramics and quite a few of papers on AFE ceramics have been reported [17,18,[37][38][39][40][41]. In this method, binary oxides, such as PbO and ZrO 2 , with high purity are used as raw materials.…”

The Chemical Interaction of Silver–Palladium Alloy Electrodes with Bismuth‐Based Piezomaterials

“…The system itself shows great promise in the development of actuators, with two compositions showing the largest strain x =2 (Δ l / l 0 =0.45 at% 8 kV/mm) and x =4 (Δ l / l 0 =0.43 at% 11 kV/mm), the cause of which is still discussed in the literature. Zhang and colleagues 13,14 suggested a field‐forced antiferroelectric–ferroelectric phase transition observed in similar lead‐based materials.…”