Scherbak S A, Kaasik V P, Zhurikhina V V, Lipovskii A A
International Laboratory of Quantum Optoelectronics, Higher School of Economics, St. Petersburg 194100, Russia.
Laboratory of Multifunctional Glassy Materials, Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia.
J Phys Condens Matter. 2021 May 11;33(23). doi: 10.1088/1361-648X/abf383.
We visualized a region of a spatial electric charge in a corona-poled soda-lime glass using scanning electron microscopy (SEM). The SEM image obtained perfectly coincides with a numerically calculated distribution of the spatial charge in the structure. Compositional depth profiles of the glass were characterized with energy dispersive x-ray (EDX) analysis. The measurements showed that Kions, the total concentration of which in pristine glass is practically negligible, pile-up significantly just beside a backfront of fast Naions, and their peak concentration exceeds initial Kcontent by about 15 times. This is in a good agreement with an analytical model recently presented by Oven. However, diffusion smearing of the spatial charge distribution and the poling profiles turns out to be much larger than the theory predicts.
我们使用扫描电子显微镜（SEM）观察了电晕极化钠钙玻璃中空间电荷的一个区域。所获得的SEM图像与结构中空间电荷的数值计算分布完全吻合。用能量色散X射线（EDX）分析对玻璃的成分深度分布进行了表征。测量结果表明，在原始玻璃中其总浓度实际上可忽略不计的钾离子，在快速钠离子的前沿之后显著堆积，其峰值浓度超过初始钾含量约15倍。这与奥文最近提出的一个分析模型非常吻合。然而，空间电荷分布和极化分布的扩散拖尾结果比理论预测的要大得多。
