Electron emission from La-doped Pb(Zr,Sn,Ti)O_3 antiferroelectrics by pulse electric field and the relevant physical mechanism  

作　　者：ZHANG LinLi FENG YuJun XU Zhuo SHENG ZhaoXuan 

机构地区：[1]Department of Physics, Xi'an University of Architecture and Technology, Xi'an 710055, China [2]Electronic Materials Research Laboratory, Xi'an Jiaotong University, Xi'an 710049, China

出　　处：《Chinese Science Bulletin》2009年第19期3489-3493,共5页

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 10474077, 50632030);National Basic Research Program of China (Grant No. 2002CB613307)

摘　　要：We investigate the characteristics of emission current waves of antiferroelectric cathode material lanthanum-doped lead zirconate stannate titanate (PLZST) triggered by pulse field, and analyze the relationship of the emission current waveforms with the extraction voltage. The close correlation between the triggering pulse polarity and emission current waveform observed evidences the relevant physical process of electron emission. We speculate that the primary emission may result from local phase transition and field emission in the vicinity of triple junctions, and the plasma formation may enhance the electron emission.We investigate the characteristics of emission current waves of antiferroelectric cathode material lanthanum-doped lead zirconate stannate titanate （PLZST） triggered by pulse field, and analyze the relationship of the emission current waveforms with the extraction voltage. The close correlation between the triggering pulse polarity and emission current waveform observed evidences the relevant physical process of electron emission. We speculate that the primary emission may result from local phase transition and field emission in the vicinity of triple junctions, and the plasma formation may enhance the electron emission.

关 键 词：电子散射 电子学 掺杂 PLZST 

分 类 号：TN014[电子电信—物理电子学]