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Effects of La 2 O 3 Addition and PbO Excess on the Transmittance of PbZrO 3 –PbTiO 3 –Pb(Zn 1/3 Nb 2/3 )O 3 Ceramics by Spark Plasma Sintering
Author(s) -
Wu Yong Jun,
Li Juan,
Chen Xiang Ming,
Kimura Ryo,
Kakegawa Kazuyuki
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.02001.x
Subject(s) - transmittance , materials science , analytical chemistry (journal) , spark plasma sintering , microstructure , ceramic , mineralogy , chemistry , metallurgy , optoelectronics , chromatography
The effects of La 2 O 3 addition and PbO excess on the microstructures and optical properties of PbZrO 3 –PbTiO 3 –Pb(Zn 1/3 Nb 2/3 )O 3 (PZ–PT–PZN) ceramics prepared by spark plasma sintering were investigated. When 1 mol% La 2 O 3 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% La 2 O 3 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.