Compositional effect on piezoelectric and anomalous photovoltaic properties of PLZT ceramics with fixed grain sizes

Abstract

Lanthanum-modified lead zirconate titanate (PLZT) ceramics possess the photostrictive effect applicable to photo-driven and wireless actuators. The piezoelectric and anomalous photovoltaic (APV) properties of PLZT ceramics with different compositions but the same grain size were evaluated to investigate the intrinsic compositional effects. After the adjustment of the sintering temperature and soaking time, the grain sizes of PLZT ceramics with different compositions were controlled in a narrow range of 0.7-0.8 μm. Both the maximum photocurrent and photo-EMF after grain size control were found at PLZT 4/52/48.

Harmonic electro-optic modulation using relaxor ferroelectric PLZT ceramics

“…In figure 5, the modulation at the first harmonic with no DC bias is nil, which is in agreement with equation (18). All the experimental curves in this figure were successfully fitted to equation (20), using the appropriate value for …”

“…The structural 9, 10 , dielectric 11,12,13 , electro-mechanical 14,15 and optical 16,17 properties of PLZT have been widely studied in recent years, and many peculiarities 18,19 were observed in their behavior. The electro-optic modulation 20,21,22,23 , as well as the second harmonic generation 24,25 of light in PLZT have been previously studied for use in lasers, spatial light modulators and other optical applications.…”

PLZT-Based Light Controlled Piezoelectric Transformer

“…The photovoltage in PLZT ceramics exhibit direct dependence on polarization type and direction of illumination light, sample thickness [4] and composition [5]. The optimal illumination wavelength for obtaining maximum photovoltage is 366 nm, whereas cutoff of optical transmission was observed near 400 nm for PLZT ceramics.…”