Effects of Bi3+ Doping on the Optical and Electric-Induced Light Scattering Performance of PLZT (8.0/69/31) Transparent Ceramics

Abstract

Lanthanum modified lead zirconate titanate (abbreviated as PLZT) Electro-Optical ceramics with various Bi concentration were prepared by a hot-press process. The PLZT ceramic samples all present a single perovskite structure with no second phase detected. Bi3+ ion was considered to mainly enter the A-site of perovskite ABO3 structure of PLZT ceramics by the X-Ray Diffractionanalysis. The maximum permittivity (εm) of the PLZT samples decreased obviously as Bi concentration increased, while their remnant polarization (Pr) decreased slightly. In particular, the PLZT sample with 0.14 wt% Bi doping presented a higher optical transmittance 61.8% (λ = 633 nm), and its electric-induced light scattering performance was found to be improved obviously, the maximum light deduction value of ~47.6% was obtained.

La-doped PMN–PT transparent ceramics with ultra-high electro-optic effect and its application in optical devices

“…The above macroscopic analysis of explaining the high EO effect is reasonable but still not comprehensive and profound. Among the references we have found so far, there is some literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]28,29] that studies ferroelectric domains of the PMN-PT ceramics, but lacks very clear domain morphology characterization. We obtained the domain morphology and studied the domain reversal (polarization behavior) from microscopic perspective to further demonstrate instability of the intermediate ferroelectric state.…”

“…Utilizing the high EO effect of PMN-PT to design optical devices with tuning capability such as TOF is very valuable; however, application studies of the PMN-PT ceramics are rarely reported [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. To realize the application of the PMN-PT transparent ceramics in EO tunable filters, we first tested TFPF based on 2/75/25 ceramic sheet.…”

“…Therefore, many researchers are devoted to developing different electro-optic (EO) materials, such as LiNbO 3 (LN), KH 2 PO 4 (KDP), lead lanthanum zirconate titanate (PLZT), and Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PMN-PT). The advantages of LN and KDP single crystals are high optical uniformity, but their low linear EO coefficients (< 20×10 −12 pm•V −1 ) and high half-wave voltages (> 2500 V) limit their wider applications [4][5][6]. The EO property of PLZT is superior to that of LN due to its high quadratic EO coefficient (9×10 −16 m 2 •V −2 ) and relatively low half-wave voltage (< 800 V); however, its significant polarization-dependent scatterings loss and field-induced hysteresis limit its application to high-speed modulation devices [5,7].…”

“…The advantages of LN and KDP single crystals are high optical uniformity, but their low linear EO coefficients (< 20×10 −12 pm•V −1 ) and high half-wave voltages (> 2500 V) limit their wider applications [4][5][6]. The EO property of PLZT is superior to that of LN due to its high quadratic EO coefficient (9×10 −16 m 2 •V −2 ) and relatively low half-wave voltage (< 800 V); however, its significant polarization-dependent scatterings loss and field-induced hysteresis limit its application to high-speed modulation devices [5,7]. PMN-PT transparent ceramics have the largest EO coefficient of 66×10 −16 m 2 •V −2 reported so far, which is much larger than those of LN, KDP, and PLZT [8].…”

“…The understanding of the relationship among doping, domain structure, ferroelectric polarization, and EO effect is still limited though tremendous progresses have been made in the preparation of the transparent ferroelectric ceramics and the optimization of their EO effects. Besides, few works have fabricated EO modulation devices based on the PMN-PT ceramics because the preparation of the EO devices is difficult, and it is hard to obtain ultra-high EO coefficients and high light transmittance at the same time [3][4][5][6][7][8][9][10][11][12][13][14][15][16].…”