Polarizability model of emission from ceramic cathodes

Boscolo, I.; Cialdi, S.

doi:10.1063/1.1465503

Cited by 23 publications

(13 citation statements)

References 29 publications

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“…18,[21][22][23][24] An analysis of the dynamics in the time domain of 10 Ϫ8 Ͻt Ͻ10 Ϫ6 s has provided incomplete information, upon which to develop a mechanistic understanding. Various investigations have used Eqs.…”

Section: A Prior Studies Of Polarization Dynamics In Normal Ferroelementioning

confidence: 99%

Investigation of polarization switching in (001)c, (110)c, and (111)c oriented Pb(Zn1/3Nb2/3)O3–4.5%PbTiO3 crystals

Jullian

Viehland

2004

Journal of Applied Physics

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The dynamics of polarization switching have been investigated over extremely broad time (10−8<t<102 s) and field ranges for (001)c, (110)c, and (111)c-oriented Pb(Zn1/3Nb2/3)O3–4.5%PbTiO3 crystals. The results demonstrate the presence of broad relaxation time distributions that can extend over a decade(s) in orders of magnitude in time, and which sharpen significantly with increasing field. The polarization transients have been fit to stretched exponential functions, which are typical of disordered systems.

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Section: A Prior Studies Of Polarization Dynamics In Normal Ferroelementioning

confidence: 99%

Investigation of polarization switching in (001)c, (110)c, and (111)c oriented Pb(Zn1/3Nb2/3)O3–4.5%PbTiO3 crystals

Jullian

Viehland

2004

Journal of Applied Physics

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“…The dark emission appears at driving electric field amplitudes less than 10 kV/cm, usually without visible light emission from the ceramic surface [4][5][6] . The current pulse in dark mode has a duration less than 0.5 _s at a current density amplitude ≤ 1 A/cm 2 .…”

Section: Usamentioning

confidence: 99%

“…In recent publications 3,4,5,6 , dark and bright modes were distinguished from the electron emission observed from ferroelectrics. The dark emission appears at driving electric field amplitudes less than 10 kV/cm, usually without visible light emission from the ceramic surface [4][5][6] .…”

Section: Usamentioning

confidence: 99%

Ferroelectric cathodes in transverse magnetic fields

Dunaevsky

Raitses

Fisch

2003

Journal of Applied Physics

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Experimental investigations of a planar ferroelectric cathode in a transverse magnetic field up to 3 kG are presented. It is shown that the transverse magnetic field differently affects the operation of ferroelectric plasma cathodes in “bright” and “dark” emission modes in vacuum. In the bright mode, when the surface plasma is formed, the application of the transverse magnetic field leads to an increase of the surface plasma density. In the dark mode, the magnetic field impedes the electron emission. This result indicates the similarity of the dark emission mode to the surface preflashover, where the transverse magnetic field inhibits the development of secondary electron avalanches along the surface.

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“…3 The principle of FPS operation is based on the high polarizability of ferroelectrics. 4 Application of the driving pulse leads to appearance of substantial polarization charge at the front surface. Pattern geometry of the front electrode causes nonuniformity in distribution of the polarization charge along the surface, which means the existence of a tangential electric field.…”

Section: Introductionmentioning

confidence: 99%