Thickness profiles through fatigued bulk ceramic lead zirconate titanate

Abstract

Wedge-cut samples of fatigued ferroelectric lead zirconate titanate ceramics were investigated using piezoresponse force microscopy in conjunction with conventional electrical hysteresis measurements. The local clamping of domains is monitored at different depths in the sample. The coercive fields in grains near the electrodes differ for different materials and preparation methods of the electrodes. For silver, fatigue consistently generates a space charge in the depth of the sample. For platinum electrodes, the fatigue behavior scatters strongly. Microscopically, it either occurs directly underneath the electrodes or resembles the behavior of the silver electrodes in other samples.

Hardening-softening transition in Fe-doped Pb(Zr,Ti)O3 ceramics and evolution of the third harmonic of the polarization response

“…The first is insufficient energy for removing all factors contributing to the hysteresis loop pinching and slow kinetics of defects responsible for pinching. The second is ferroelectric fatigue [32][33][34] during cycling which leads to the loop suppression. not always convenient because the current peaks may not be well pronounced.…”

Residual stress relief due to fatigue in tetragonal lead zirconate titanate ceramics

“…15,16 Fatigue damage may also be localized in the nearelectrode regions. 17,18 This combination of factors has led to some complexity in the interpretation of fatigue phenomena and means that it is difficult to draw general conclusions concerning the relative importance of the different mechanisms for a given material or device type.…”

Structural contribution to the ferroelectric fatigue in lead zirconate titanate ceramics

“…Special care has to be taken However, we took special care to prevent interface effects by using high quality electrodes and we clearly checked that nearly no fatigue could be observed in our material in the range of 10 5 cycles 19 . In order to assure stable conditions during the stroboscopic measurements, the samples were pre-cycled 10 5 times with a bipolar electric field of 2.0 kV/mm and a frequency of 50 Hz.…”

“…X-ray measurements were performed at the high resolution powder diffraction station of the materials science beam line at the Swiss Light Source (SLS, Villigen, Switzerland) 18 using high-energy photons λ = 0.443187 Å to study thin silver metallized PZT pellets 19 (thickness ≤ 110 µm) in transmission geometry. Commercially available PIC 151 (PI Ceramics, Lederhose, Germany), which we already used 15 as it presented optimal piezo-and ferroelectric properties properties (d 33 = 500 pC/N), long operation periods and offers a high degree of reproducibility, was used to compare unfatigued and fatigued samples.…”