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.
Highlights
Lanthanum modified lead zirconate-titanate electro-optical (EO) ceramics Pb1−x Lax (Zr1−y Tiy )1−x/4 O3, abbreviated as PLZT(x/(1−y)/y), were first reported in 1970 by Haertling [1]
PLZT (8.0/69/31) EO ceramics with Bi doping were fabricated by a hot-press process for the PLZT (8.0/69/31) EO ceramics with Bi doping were fabricated by a hot-press process for the first first time
The XRD analysis confirmed that3+the Bi3+ ions entered the A-site of perovskite ABO3 time
Summary
Lanthanum modified lead zirconate-titanate electro-optical (EO) ceramics Pb1−x Lax (Zr1−y Tiy )1−x/4 O3 , abbreviated as PLZT(x/(1−y)/y), were first reported in 1970 by Haertling [1]. When applying an appropriate electric field to these PLZT transparent ceramics, a light scattering phenomenon takes place and the ceramic sample becomes opaque; and when removing this electric field, the light scattering phenomenon will disappear immediately and the ceramic sample reverts to being transparent simultaneously [7,8]. These materials can be used to design and produce the key EO elements applying in various high-speed optical modulators without the polarization system, such as Materials 2019, 12, 1437; doi:10.3390/ma12091437 www.mdpi.com/journal/materials. It is urgent to optimize and strengthen the electric-induced light scattering properties of PLZT EO ceramics
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