Effects of La2O3 Addition and PbO Excess on the Transmittance of PbZrO3–PbTiO3–Pb(Zn1/3Nb2/3)O3 Ceramics by Spark Plasma Sintering |
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| Authors: | Yong Jun Wu Juan Li Xiang Ming Chen Ryo Kimura Kazuyuki Kakegawa |
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| Affiliation: | Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
;College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310006, China
;Department of Material Technology, Faculty of Engineering, Chiba University, Chiba 263-8522, Japan |
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| Abstract: | The effects of La2O3 addition and PbO excess on the microstructures and optical properties of PbZrO3–PbTiO3–Pb(Zn1/3Nb2/3)O3 (PZ–PT–PZN) ceramics prepared by spark plasma sintering were investigated. When 1 mol% La2O3 was added, the highest transmittance of 35% at 700 nm for PZ–PT–PZN ceramics was obtained. The improved transmittance was attributed to the increased relative density and the decreased optical anisotropy. The samples containing more than 1 mol% La2O3 showed decreased transmittance, due to the appearance of secondary phases. The transmittance of PZ–PT–PZN ceramics increased slightly to 29% at 700 nm with increasing amount of excess PbO up to 10 mol% and thereafter decreased rapidly. |
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