Abstract
Abstract Fast rising electrical fields cause switching of a ferroelectric material and induce electron emission from its surface. Moreover, this process is strongly related to the degree of polarization change in the material. Simultaneous observation of the switching current and the electron beam pulse demonstrate that electrons are emitted due to successive partial switching and even due to switching from the remanent to the saturation polarization state. Generally it has to be distinguished between the setting free of electrons by the fast polarization inversion and the extraction of the beam. Calculations show that the field at the sample surface is strongly bent due to the grid structure of the electrode. Consequently, low energy electrons are turned off and captured by the electrode. This can be avoided by introducing an additional extraction potential. Thus significant current amplitudes were achieved also from thin ceramic emitters down to 85 μm thickness. The experimental technique is described.
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.
