Simulation and Experimental Investigations of an Efficient and Stable Ferroelectric Cathode

ZHANG Qing-Hui; ZHENG Shu-Xin; TANG Chuan-Xiang; LI Quan-Feng

Chinese Physics C> 2006, Vol. 30> Issue(1) : 71-74

Simulation and Experimental Investigations of an Efficient and Stable Ferroelectric Cathode

Department of Engineering Physics,Tsinghua University,Beijing 100084,China

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Abstract：
The mechanism of electron emission from ferroelectric cathode is introduced.Distribution of the applied static field in ferroelectric cathodes is simulated by MAFIA codes. It is shown that the structure of front electrode can obviously influence the static field at the triple-point of ferroelectric cathode.A ferroelectric cathode with isolated electrodes can attain stronger multiplicative field at the triple-point, which may be helpful in getting efficient and stable electron emission. In the recent experiments, we have already got stable electron emission over 100A from a PLZT8/65/35 cathode with isolated electrodes.

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. Gundel H, Reige H. Nuclear Instrument and Methods in Physics Research, 1989, A280: 12. Auciello O, Ray M A, Palmer D et al. Applied Physics Letters, 1995, 66: 21833. Miller H C. IEEE Transactions, Electrical Insulation, 1989,24: 7654. Shur D, Rosenman G. Applied Physics Letters, 1997, 70:5745. Gundel H. Electron Emission from Ferroelectrics. In: Sci-ence and Technology of Electroceramic Thin Films. Nor-well: Kluwer Academic, 1995. 3356. Boscolo I. Ceramic Disks as Ecient and Robust Cathodes.In: Proceedings of the 1999 Particle Accelerator Confer-ence. New York, 1999. 19827. Rosenman G, Shur D. Journal of Applied Physics, 2000,88: 6109

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ZHANG Qing-Hui, ZHENG Shu-Xin, TANG Chuan-Xiang and LI Quan-Feng. Simulation and Experimental Investigations of an Efficient and Stable Ferroelectric Cathode[J]. Chinese Physics C, 2006, 30(1): 71-74.

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Received: 2005-03-09
Revised: 2005-04-06

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Simulation and Experimental Investigations of an Efficient and Stable Ferroelectric Cathode

Corresponding author: ZHANG Qing-Hui,

Department of Engineering Physics,Tsinghua University,Beijing 100084,China

Received Date: 2005-03-09

Accepted Date: 2005-04-06

Available Online: 2006-01-05

Abstract: The mechanism of electron emission from ferroelectric cathode is introduced.Distribution of the applied static field in ferroelectric cathodes is simulated by MAFIA codes. It is shown that the structure of front electrode can obviously influence the static field at the triple-point of ferroelectric cathode.A ferroelectric cathode with isolated electrodes can attain stronger multiplicative field at the triple-point, which may be helpful in getting efficient and stable electron emission. In the recent experiments, we have already got stable electron emission over 100A from a PLZT8/65/35 cathode with isolated electrodes.

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Simulation and Experimental Investigations of an Efficient and Stable Ferroelectric Cathode

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