Abstract
We show that electron emission from a relaxor ferroelectric cathode varies with the temperature as the dielectric constant. Consequently, there is no variation when the material makes the antiferroparaelectric phase transition. In addition, we have found that the emission increases with the polarizability of the material. The emission is originated by an induced change of the normal and/or spontaneous polarization. The maximum efficiency of the process, that is the ratio between the emitted charge of energetic electrons and the charge supplied to the sample by the excitation pulse, resulted in about 20%. The good emission of energetic electrons from a ceramic cathode at few hundred degrees temperature, makes this kind of cathode a proper electron injector for ion sources.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
