Polarization switching in ferroelectric cathodes

G. Rosenman, D. Shur, Kh Garb, R. Cohen, Ya E. Krasik

Research output: Contribution to journalArticlepeer-review


A new mechanism of polarization switching and electron emission in ferroelectric cathodes is proposed. Surface flashover plasma of a ferroelectric origin was observed on a polar ferroelectric surface [D. Shur, G. Rosenman, and Ya. E. Krasik, Appl. Phys. Lett. 70, 574 (1997)]. Simultaneous measurements of switched charge and plasma density show that expanding surface plasma represents a dynamic switching electrode. Direct measurements of ion/electron emission currents and surface analysis implemented by different analytic tools indicate that electrons and ions from the surface plasma contribute to spontaneous polarization screening. The high energy of charged particles emitted from the surface plasma is ascribed to a high surface potential during polarization switching.

Original languageEnglish
Pages (from-to)772-778
Number of pages7
JournalJournal of Applied Physics
Issue number2
StatePublished - 15 Jul 1997


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