The impact of surface plasma on the total emission charge from PZST cathode induced by nanosecond electric pulse

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Abstract

Electron emission from antiferroelectric (Pb0.99Nb0.02)[(Zr0.80Sn0.20)0.952Ti0.048]0.98O3 cathode has been investigated. The PZST cathode can maintain a metastable ferroelectric phase by the application of a high-enough field, thus implying three possibly pulse-loading configurations for electron emission measurements. The fact that emission charge is larger than the non-compensated charge indicates that the surface plasma contributes to the total emission charge. Furthermore, χi(i=A, B, C), characterising the contribution of surface plasma to the total emission charge, was defined. It was found that the emission charge increases almost linearly with χ i . Our results are of great importance for a better understanding of electron emission in antiferroelectric / ferroelectric cathodes.

Original languageEnglish
Article number58
JournalPramana - Journal of Physics
Volume92
Issue number4
DOIs
StatePublished - 1 Apr 2019

Keywords

  • 77.22.Ej
  • 77.80.Dj
  • 77.84.Cg
  • Electron emission
  • emission charge
  • metastable ferroelectric
  • surface plasma

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