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Non-Contact Electrical Measurements of Hot and Cold Domains in Silica Dielectric Breakdown

机译:二氧化硅介质击穿中冷区和冷区的非接触电测量

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摘要

Noncontact examination of dielectric breakdown in thin silica layers reveals the stochastic appearance of coexisting stable and "broken" surface domains. Using chemically resolved electrical measurements for resolving electrically these domains, a power law evolution of the hot channels above the percolation critical point is found, similar to(V - V-C)(2/3), accounted for by a model for discharge across a two-phase medium. Consistency with the electrical data is shown, where voltage dependent percolation paths are scanned under controllable termination of the sparklike avalanche processes. Interface effects are found to qualitatively alter the V - V characteristics of high quality layers. Useful applications in studies of stressed insulating components are expected.
机译:二氧化硅薄层中介电击穿的非接触式检查显示了稳定和“断裂”的表面域共存的随机外观。使用化学解析的电学测量方法对这些区域进行电学分析,发现了渗流临界点以上热通道的幂律演化,类似于(V-VC)(2/3),由两个模型之间的放电模型解释相介质。示出了与电数据的一致性,其中在火花状雪崩过程的可控制终止下扫描依赖于电压的渗流路径。发现界面效应从质上改变了高质量层的V-V特性。有望在应力绝缘组件的研究中有用的应用程序。

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