Domain Reversal Characteristics of Near-Stoichiometric LiNbO3 Crystals
YAO Jiang-Hong1,3, XU Jing-Jun1,3, ZHANG Guang-Yin1,3, CHEN Xiao-Jun2, LI Bing2, LI Guan-Gao2,3
1Photonics Research Center, 2Department of Physics, College of Physics Science, Nankai University, Tianjin 300071
3National Laboratory for Infrared Physics, Chinese Academy of Sciences, Shanghai 200083
Domain Reversal Characteristics of Near-Stoichiometric LiNbO3 Crystals
YAO Jiang-Hong1,3;XU Jing-Jun1,3;ZHANG Guang-Yin1,3;CHEN Xiao-Jun2;LI Bing2;LI Guan-Gao2,3
1Photonics Research Center, 2Department of Physics, College of Physics Science, Nankai University, Tianjin 300071
3National Laboratory for Infrared Physics, Chinese Academy of Sciences, Shanghai 200083
Abstract： The domain reversal characteristics of near-stoichiometric LiNbO3([Li]/[Li+Nb]=0.496) single crystals, which are grown by the Czochralski method with K2O flux, are investigated. The switch field for 180o ferroelectric domain reversal in the near-stoichiometric LiNbO3 crystal is 8.0±0.5kV/mm, which is only one third of the switching field required for the congruent LiNbO3 crystals. We have successfully achieved 180o domain reversal in near-stoichiometric LiNbO3 samples of 1.0 mm thickness.
2000, Vol. 17 
