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Characteristics of electron emission from La-doped Pb(Zr,Sn,Ti)O3 antiferroelectric cathode under negative triggering pulse

Zhang Lin-Li Xu Zhuo Feng Yu-Jun Sheng Zhao-Xuan

Characteristics of electron emission from La-doped Pb(Zr,Sn,Ti)O3 antiferroelectric cathode under negative triggering pulse

Zhang Lin-Li, Xu Zhuo, Feng Yu-Jun, Sheng Zhao-Xuan
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  • Received Date:  23 June 2008
  • Accepted Date:  06 August 2008
  • Published Online:  05 March 2009

Characteristics of electron emission from La-doped Pb(Zr,Sn,Ti)O3 antiferroelectric cathode under negative triggering pulse

  • 1. (1)西安建筑科技大学物理系,西安 710055;西安交通大学电子材料与器件教育部重点实验室,西安 710049; (2)西安交通大学电子材料与器件教育部重点实验室,西安 710049

Abstract: An antiferroelectric cathode material, lanthanum-doped lead zirconate stannate titanate (PLZST) located in the vicinity of antiferro-ferroelectric phase boundary, was prepared by solid state calcination method. The electron emission property of the novel antiferroelectric cathode under the negative triggering voltage pulses was investigated. The emission threshold value voltage from PLZST with 0.5 mm width under negative triggering pulses was 500 V. For negative triggering voltage of 500 V and extraction voltage of 3.5 kV, a large emission current of 690 A was obtained. It was indicated that the emission threshold value voltage was low and the emission current was large. Even when the triggering voltage was lower than the positive switch electric field, strong emission current can be obtained from PLZST. Finally, the mechanism of electron emission of PLZST under negative triggering pulses was discussed.

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