Processing and polarization behavior of Sr-containing lead zirconate titanate

Abstract

Sr-containing PZT compositions were selected for identifying the ferroelectric (FE) -antiferroelectric (AFE) phase boundary within the zirconium rich region of the PbZrO-PbTiO3-SrTiO3 -SrZrO3 phase diagram and for inducing the AFE-FE phase transition upon application of an applied electric field. Processing methods, based on the powder processing and sintering, were developed for fabricating dense (98.5% of theoretical density) Srcontaining PZT samples suitable for the polarization measurements. PZT specimens, with a uniform microstructure and an average grain size of 3 pm were obtained. Polarization measurements were used to locate the FE-AFE phase boundary. Subsequently, compositions near the FE-AFE phase boundary were studied for the electric field induced AFE-FE phase transition. Fieldinduced AFE-FE phase switching was observed in compositions close to the AFE-FE boundary. Residual polarization upon AFE-FE transformation suggested a coexistence of both ferroelectric and antiferroelectric phases.

Effect of electrical fatigue on the electromechanical behavior and microstructure of strontium modified lead zirconate titanate ceramics

“…The polarization (P) versus electric field (E) was measured using a modified Sawyer and Tower circuit [2,27]. The voltage was supplied using a high-voltage amplifier (Model 601C, Trek Incorporated).…”

“…Strontium is an antiferroelectric phase stabilizer resulting in a long morphotropic phase boundary (MPB), where phase transition from AF to F can be accomplished by applying an electric field. It is shown that compositions close to the MPB shows polarization as high as 33 C/cm 2 and field-induced strain as high as 0.5% [2][3][4]. The reliabilities of these piezoelectric and ferroelectric sensors and actuators depend on the time-dependant retention of their electromechanical properties.…”

“…The dotted line shows the modified AT-FR phase boundary from previous study[2]. ( ) indicates the compositions selected.…”

Dynamic In Situ X-Ray Diffraction Study of Antiferroelectric–Ferroelectric Phase Transition in Strontium-Modified Lead Zirconate Titanate Ceramics

“…The PZT solid solution displays a complex phase diagram. At room temperature, depending on the [7]. The dotted line shows the modified A T -F R phase boundary from our previous study.…”

“…Various compositions displaying field-induced AF→F phase transition were recently studied by polarization measurements. It has been shown that compositions close to the MPB like (Pb 0.90 Sr 0.10 )(Zr 0.86 Ti 0.14 )O 3 shows polarization as high as 33µC/cm 2 and field induced strain as high as 0.5% [7][8][9].…”