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Electron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage Pulses
Un-prepoled Lead Zirconate Titanate Lanthanum doped-PLZT ferroelectric cathodes have emitted intense current pulses under the action of a high voltage pulse of typically 8 kV/cm for PLZT of 8/65/35 composition and 25 kV/cm for PLZT of 4/95/5 composition. In the experiments described in this paper, t...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
1997
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1063/1.363876 http://cds.cern.ch/record/340531 |
_version_ | 1780891497337454592 |
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author | Benedek, G Boscolo, I Handerek, J Riege, H |
author_facet | Benedek, G Boscolo, I Handerek, J Riege, H |
author_sort | Benedek, G |
collection | CERN |
description | Un-prepoled Lead Zirconate Titanate Lanthanum doped-PLZT ferroelectric cathodes have emitted intense current pulses under the action of a high voltage pulse of typically 8 kV/cm for PLZT of 8/65/35 composition and 25 kV/cm for PLZT of 4/95/5 composition. In the experiments described in this paper, the exciting electric field applied to the sample is directed from the rear surface towards the emitting surface. The resulting emission is due to an initial field emission from the metal of the grid deposited over the emitting surface with the consequent plasma formation and the switching of ferroelectric domains. These electrons may be emitted directly form the crystal or from the plasma. This emission requires the material in ferroelectric phase. In fact, PLZT cathodes of the 8/65/35 type, that is with high Titanium content, showing ferroelectric-paraelectric phase sequence, emit at room temperature, while PLZT cathodes of the 4/95/5 type, that is with low Titanium content, having antiferro-ferro-paraelectric phase sequence, emit strongly at a temperature higher than 130°C. |
id | cern-340531 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1997 |
record_format | invenio |
spelling | cern-3405312023-05-31T14:19:17Zdoi:10.1063/1.363876http://cds.cern.ch/record/340531engBenedek, GBoscolo, IHanderek, JRiege, HElectron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage PulsesAccelerators and Storage RingsUn-prepoled Lead Zirconate Titanate Lanthanum doped-PLZT ferroelectric cathodes have emitted intense current pulses under the action of a high voltage pulse of typically 8 kV/cm for PLZT of 8/65/35 composition and 25 kV/cm for PLZT of 4/95/5 composition. In the experiments described in this paper, the exciting electric field applied to the sample is directed from the rear surface towards the emitting surface. The resulting emission is due to an initial field emission from the metal of the grid deposited over the emitting surface with the consequent plasma formation and the switching of ferroelectric domains. These electrons may be emitted directly form the crystal or from the plasma. This emission requires the material in ferroelectric phase. In fact, PLZT cathodes of the 8/65/35 type, that is with high Titanium content, showing ferroelectric-paraelectric phase sequence, emit at room temperature, while PLZT cathodes of the 4/95/5 type, that is with low Titanium content, having antiferro-ferro-paraelectric phase sequence, emit strongly at a temperature higher than 130°C.CERN-LHC-97-009-DLOoai:cds.cern.ch:3405311997-11-24 |
spellingShingle | Accelerators and Storage Rings Benedek, G Boscolo, I Handerek, J Riege, H Electron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage Pulses |
title | Electron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage Pulses |
title_full | Electron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage Pulses |
title_fullStr | Electron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage Pulses |
title_full_unstemmed | Electron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage Pulses |
title_short | Electron Emission from Ferroelectric/Antiferroelectric Cathodes Excited by Short High-Voltage Pulses |
title_sort | electron emission from ferroelectric/antiferroelectric cathodes excited by short high-voltage pulses |
topic | Accelerators and Storage Rings |
url | https://dx.doi.org/10.1063/1.363876 http://cds.cern.ch/record/340531 |
work_keys_str_mv | AT benedekg electronemissionfromferroelectricantiferroelectriccathodesexcitedbyshorthighvoltagepulses AT boscoloi electronemissionfromferroelectricantiferroelectriccathodesexcitedbyshorthighvoltagepulses AT handerekj electronemissionfromferroelectricantiferroelectriccathodesexcitedbyshorthighvoltagepulses AT riegeh electronemissionfromferroelectricantiferroelectriccathodesexcitedbyshorthighvoltagepulses |