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The Effect of Al Doping on Ferroelectric and Dielectric Properties of PLZT Transparent Electro-optical Ceramics

  • Bin Zhu
  • Zhaodong Cao
  • Xiyun HeEmail author
  • Xia Zeng
  • Pingsun Qiu
  • Liang Ling
  • Suchuan ZhaoEmail author
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 216)

Abstract

The PLZT (8.0/69/31) transparent ceramics with Al doping were prepared by hot-press sintering technique. A single perovskite structure was observed by X-ray diffraction in all samples. The ferroelectric and dielectric properties of the materials change obviously with increasing Al content: The maximum dielectric constant was raised to 16,000, while the dielectric constant (εr) at room temperature presented a decreasing tendency from 5764 to 2501. The polarization versus electric field (P-E) hysteresis loops change from antiferroelectric (AFE) phase to ferroelectric (FE) phase at room temperature. The grains of the PLZT ceramics grow up with less Al doping, but the grain size decreases, while the Al-doping content increases further. The PLZT ceramics with a little Al (x = 0.50 mol%) doping exhibit a better transparency and conspicuous variations in ferroelectric and dielectric properties. This will be helpful for designing the materials for optical modulators.

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 51602327).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.The Science AcademyShanghai UniversityShanghaiChina
  2. 2.Shanghai Institute of Ceramics, Chinese Academy of SciencesShanghaiChina
  3. 3.Shanghai Institute of Laser Plasma, China Academy of Engineering PhysicsShanghaiChina

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