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Influence of pulse polarity on electron emission property of antiferroelectric ceramic
  • ISSN号:1001-6538
  • 期刊名称:科学通报(英文版)
  • 时间:0
  • 页码:1789-1795
  • 语言:中文
  • 分类:TN78[电子电信—电路与系统]
  • 作者机构:[1]Electronic Materials Research Laboratory, Xi'an Jiaotong University, Xi'an 710049, China, [2]103 Teaching and Researching Laboratory, the Second Artillery Engineering Institute, Xi'an 710025, China
  • 相关基金:Supported by the National Basic Research Program of China (Grant No. 2002CB613307) and the National Natural Science of China (Grant No. 50472052)
  • 相关项目:铁电阴极强电子发射特性和机制研究
中文摘要:

积极或否定的被触发的电压脉搏的申请上的做镧的铅锆酸盐锡酸盐泰坦吃了的新奇的反铁电体阴极材料(PLZST ) 的电子排放性质被调查了。所有实验在 1 的真空被执行(-5) Torr 并且在房间温度。低积极被触发电压什么时候被用于后面的电极,和三电子排出物,被发现有二电子排放脉搏当高时,搏动被触发的电压被使用。当否定被触发脉搏被使用时,然而,总是有二电子排放脉搏。这现象被建议是在极化颠倒引起的三倍的连接和电子排放的两领域电子排出物的结果。试验性的观察在被触发的电压脉搏的申请下面在附近结束显示那个领域运动到三倍的连接可以是从 PLZST 的电子排放的主要起源。

英文摘要:

The electron emission property of a novel antiferroelectric cathode material lanthanum-doped lead zirconate stannate titanate (PLZST) on the application of positive or negative triggering voltage pulses has been investigated. All experiments were performed in a vacuum of 10-5 Torr and at room temperature. It was discovered that there were two electron emission pulses when low positive triggering voltage was applied to the rear electrode, and three electron emission pulses when high positive triggering voltage was applied. However there were always two electron emission pulses when negative triggering pulses were applied. This phenomenon is proposed to be a result of both field electron emission at triple junctions and electron emission caused by polarization reversal. The experimental observations indicate that domain movement in the vicinity close to the triple junction under applica- tion of the triggering voltage pulse may be a primary origin of electron emission from PLZST.

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