Lanthanum Dependence of the Electrically Controlled Light Scattering Performances of PLZT Transparent Ceramics

Xiao Ning Zhang; Xi Yun He; Bin Xia; Ping Sun Qiu; Wen Xiu Cheng; Xia Zeng

doi:10.4028/www.scientific.net/KEM.602-603.998

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 602-603Lanthanum Dependence of the Electrically...

Lanthanum Dependence of the Electrically Controlled Light Scattering Performances of PLZT Transparent Ceramics

Abstract:

Lead lanthanum zirconate titanate (PLZT) transparent ceramics have attracted more and more attentions for their unique electrically controlled light scattering effects. By the hot-press sintering method, a series of PLZT (X/70/30) ceramics with different La concentration (7.3, 7.4, 7.45, 7.5, 7.6 mole %) have been synthesized to figure out its influence on the electrically controlled light scattering performances. XRD patterns reveal the formation of a single-phase perovskite structure for all samples. The PLZT (7.3/70/30, 7.4/70/30, 7.45/70/30) samples exhibit a ferroelectric behavior, but with the La concentration increasing, the samples exhibit a tendency of a double hysteresis loop which is due to antiferroelectric phase coexisted. The temperature of maximum dielectric constant (T_m) of the PLZT (X/70/30) ceramics shifts from ~99 °C to ~87 °C with the increasing of La concentration at 1 kHz. All samples exhibit a high transmittance (61%, 0.35 mm) within the wavelength range from visible to near-infrared light. Depending on the La concentration, the light scattering behavior of PLZT ceramics exhibit two main types, in which PLZT (7.45/70/30) promises a unique potential application in laser modulators for its outstanding advantages of less energy consumption and relatively larger contrast ratio.

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Key Engineering Materials (Volumes 602-603)

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998-1003

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https://doi.org/10.4028/www.scientific.net/KEM.602-603.998

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Online since:

March 2014

Authors:

Xiao Ning Zhang, Xi Yun He*, Bin Xia, Ping Sun Qiu, Wen Xiu Cheng, Xia Zeng

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Electrically Controlled Light Scattering, Ferroelectricity, PLZT Transparent Ceramics

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