Non-destructive observation of ferroelectric domain inverted structures in MgO:LiNbO3 by scanning electron microscope
Non-destructive observation of ferroelectric domain inverted structures in MgO:LiNbO3 by scanning electron microscope
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扫描电镜无损观察MgO:LiNbO3铁电畴倒置结构
DOI：
10.1049/el.2014.3958
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发表时间：
2015
影响因子：
1.1
通讯作者：
K. Tanaka and T. Suhara
中科院分区：
文献类型：
--
作者：
中西貴士;加藤泰彦;松浦友亮;渡邉肇;K. Tanaka and T. Suhara
报道了用扫描电子显微镜对掺氧化镁（MgO）的铌酸锂（LiNbO3）晶体铁电畴反转（DI）结构的无损观察。测量依赖于加速电压的二次电子发射系数以找到二次交叉电压。观察到热释电电荷形成的表面电位差。在电信波段获得了周期为15 μm的DI准相位匹配结构的高对比度图像。
The non‐destructive observation of ferroelectric domain inverted (DI) structures in magnesium oxide (MgO)‐doped lithium niobate (LiNbO3) crystals by a scanning electron microscope is reported. The secondary electron emission coefficient dependent on the acceleration voltage is measured to find the second cross‐over voltage. The surface potential contrast formed by the pyroelectric charge was observed. The high‐contrast images of DI structures of 15 μm period for quasi‐phase matching is obtained in the telecom wavelength band.