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    • Keywords


      Electron emission; metastable ferroelectric; surface plasma; emission charge

    • Abstract


      Electron emission from antiferroelectric ($\rm{Pb_{0.99}Nb_{0.02})[(Zr_{0.80}Sn_{0.20})_{0.952}Ti_{0.048}]_{0.98}O_{3}}$ 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, $_{χi} (i = \rm{A, B, C})$, characterising the contribution of surface plasma to the total emission charge, was defined. It was found that the emission charge increases almost linearly with $_{χi}$. Our results are of great importance for a better understanding of electron emission in antiferroelectric/ferroelectric cathodes.

    • Author Affiliations



      1. Northwest Institute of Nuclear Technology, Xi’an 710024, China
      2. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, China
      3. Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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