Light Scattering Properties for PLZT Transparent Ceramics of Different Zr/Ti Ratios

Abstract:

Lead lanthanum zirconate titanate (PLZT) transparent ceramics present an attractive electrically controlled light scattering performance with high transmittance and large contrast ratio. PLZT ceramics of 8 mole% lanthanum with different Zr/Ti ratios (Zr/Ti=68/32, 70/30, 72/28) were prepared by the hot pressing method to figure out the influence of Zr/Ti ratios to the light scattering performance. X-ray diffraction patterns confirm that all the samples are perovskite structure with no secondary impurity phase detected. All the three compositions show double tending slim hysteresis loops which due to antiferroelectric phase coexisted. Besides, within the range of near-infrared to ultraviolet wavelength, all the PLZT samples show high transmittance. While the Zr/Ti ratio increasing from 68/32 to 72/28, the transmittance reduced value R_T of the sample decreases gradually (λ: 632.8 nm). PLZT (8/68/32) sample shows a maximum R_T, it promises a good application in optical modulators, goggles and so on.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1537-1540
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1537
• Online since: June 2012
• Authors: Bin Xia, Xi Yun He, Xin Sen Zheng, Ping Sun Qiu, Wen Xiu Cheng, Xia Zeng
• Keywords: Ferroelectric Materials, Light Scattering, Perovskite, PLZT

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