Electro-thermal poling of a technical glass containing mobile Na+ and K+ ions is investigated in an experiment. Ex-situ analysis of the concentration profiles by means of ToF-SIMS demonstrates the formation of two zones; a zone depleted of both Na+ and K+ ions and a zone where K+ has been enriched above the bulk concentration. Theoretical analysis by means of Monte Carlo calculations are capable of rationalizing these profiles. The key to the mechanism of poling is the transient dielectric breakdown of the material leading to ejection of electrons into the anode and depletion of cations towards the cathode leaving an electroneutral zone behind.

中文翻译：

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介电击穿在D263T玻璃电热极化中的作用

在实验中研究了含有可移动 Na+ 和 K+ 离子的技术玻璃的电热极化。通过 ToF-SIMS 对浓度分布的异位分析表明形成了两个区域；Na+ 和 K+ 离子都耗尽的区域，以及 K+ 富集到高于整体浓度的区域。借助蒙特卡罗计算的理论分析能够使这些分布合理化。极化机制的关键是材料的瞬态介电击穿导致电子射入阳极并耗尽阳离子向阴极留下电中性区。