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Strong Electron Emission from Ferroelectric Cathode

机译:铁电阴极的强电子发射

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摘要

On the basis of our past research on the strong electron emission from Pb(Zr,Ti)O_3 (PZT) ferroelectric materials and its applications to microwave amplification, a new model of ferroelectric emission is proposed. The model suggests that the strong ferroelectric emission is caused by the intrinsic nature of the material's ferroelectricity, -by consecutive domain switching or oscillation due to the application of a trigger pulse. It also includes, in most cases, the direct and indirect effects of the surface plasma. The model is capable of providing a reasonable explanation for the fact that the strong emission can only be obtained with grid electrodes; this is not been explained by the existing theory on ferroelectric emission.
机译:在我们过去对Pb(Zr,Ti)O_3(PZT)铁电材料的强电子发射及其在微波放大中的应用的研究的基础上,提出了一种新的铁电发射模型。该模型表明,强铁电发射是由材料铁电的内在特性引起的,这是由于施加触发脉冲引起的连续畴切换或振荡引起的。在大多数情况下,它还包括表面等离子体的直接和间接作用。该模型能够为仅使用栅电极才能获得强发射的事实提供合理的解释。现有的铁电发射理论没有对此进行解释。

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