Abstract
On the basis of our past research on the strong electron emission from Pb(Zr,Ti)O3 (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.
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