Domain inversion in LiNbO₃ and LiTaO₃ induced by proton exchange

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• 作者：Zhi-Yong Zhang ; Yong-yuan Zhu ; Hai-feng Wang ; Lu-chun Wang ; Shi-ning Zhu ; Nai-ben Ming
• 关键词：LiNbO₃ and LiTaO₃ ; Domain inversion ; Internal electric field model
• 刊名：Physica B
• 出版年：2007
• 出版时间：1 August 2007
• 年：2007
• 卷：398
• 期：1
• 页码：151-158
• 全文大小：544 K

文摘

This review paper reports the studies on ferroelectric domain inversion and inverse mechanism in ferroelectric and dielectric LiNbO₃ and LiTaO₃ single crystals by proton exchange followed by heat treatment. Secondary ion mass spectroscopy and numerical simulation of proton profile, differential scanning calorimetry, pyroelectric experiment and transmission electron microscopy were used to characterize the domain inversion. The inverse mechanism was discussed by means of an internal electric field model, which is based on the concentration gradient of proton and lithium deficiency.